Every control on the unit, explained in plain English.
Front panel
Knobs
MIC 1 LEVEL knob
This sets how loud the first microphone is in the mix. Turn it up to make your voice louder, down to make it quieter. There's a CLIP/SIGNAL indicator next to it that lights up when the mic is picking up sound.
tip: The manual warns that turning this too far clockwise outputs sound at a high volume, so bring it up gradually while talking and stop before the CLIP indicator lights red to avoid distortion.
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Adjusts the volume of the sound coming into the [MIC 1] terminal on the rear panel. The microphone must be turned on with the [ON] button in the MIC section for this knob to have any effect.
MIC 2 LEVEL knob
Same as the MIC 1 knob but for a second microphone — handy if you have a co-host or a guest MC. Turn it up to make that mic louder, down to quiet it.
tip: Each mic has its own separate ON button, LEVEL knob, and EQ knobs, so you can set two different people to comfortable volumes independently.
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Adjusts the volume of the sound coming into the [MIC 2] terminal on the rear panel. The microphone must be turned on with its [ON] button in the MIC section for this knob to work.
MIC 1 EQ (HI, MID, LOW) knobs
These shape how the first microphone sounds. HI adds or removes crispness and air, MID handles the body and presence of the voice, and LOW controls warmth and boominess. Turn a knob right to boost that part, left to cut it.
tip: If a voice sounds boomy or muddy, roll the LOW knob down a little. If speech sounds unclear, a small boost to MID helps it cut through the music.
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Three tone controls for MIC 1. Each adjusts a frequency band: HI covers 10 kHz (±12 dB), MID covers 2.5 kHz (±12 dB), and LOW covers 100 Hz (±12 dB).
MIC 2 EQ (HI, MID, LOW) knobs
The tone shaping for your second microphone. HI for brightness, MID for vocal clarity, LOW for warmth or removing rumble. Boost by turning right, cut by turning left.
tip: Set both mics' EQ to match if two people are talking, so the switch between voices sounds seamless.
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Three tone controls for MIC 2, identical in range to MIC 1: HI at 10 kHz, MID at 2.5 kHz, and LOW at 100 Hz, each adjustable ±12 dB.
TRIM knob
This is the first volume stage for each deck. Think of it as setting how strong the signal starts before you push the fader up. Set it right and the channel meter lights up nicely into the upper range without hitting the red.
tip: Aim the channel level indicator to peak around the top orange lights (just below the red CLIP) with the fader all the way up. Setting TRIM properly here gives you clean headroom and matched volumes when you switch between tracks.
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Sets the input gain for a channel — the volume of the sound entering that channel before it reaches the channel fader. Each of the four channels has its own TRIM knob. The channel level indicator lights up as you feed sound in.
EQ/ISO (HI, MID, LOW) knobs
These shape the sound of the track playing on that channel: HI for cymbals and highs, MID for vocals and instruments, LOW for the bassline and kick drum. In EQ mode, turning a knob all the way down still leaves a little of that sound. In ISO mode, turning fully down removes that part completely — great for killing the bass to blend two tracks.
tip: Switch to ISO mode in the settings if you like doing dramatic transitions — turning the LOW knob fully left will completely mute the bass, letting you swap the low end from one track to another cleanly.
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Three tone controls per channel for the deck's music. They can act as an equalizer (EQ) or an isolator (ISO) depending on the [EQ / ISO] setting in the Utility or Mixer Settings menu. In EQ mode each band ranges -26 dB to +6 dB; in ISO mode each band ranges -∞ dB (fully off) to +6 dB.
COLOR knob
This is a one-knob creative filter for each channel. After you pick an effect type with the buttons, turning this knob left or right applies it — for example with FILTER, turning left muffles the sound (removes highs) and turning right makes it thin and tinny (removes lows). The center position is usually no effect.
tip: FILTER is the most useful everyday setting: leave it selected and use the COLOR knob to sweep tracks in and out of a build-up. Use the PARAMETER knob in the Sound Color FX section to fine-tune the intensity of whatever effect you've chosen.
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Controls the amount and character of the currently selected Sound Color FX (SPACE, DUB ECHO, SWEEP, NOISE, CRUSH, or FILTER) on that channel. Each channel has its own COLOR knob. The effect must be selected with a SOUND COLOR FX button first.
MASTER LEVEL knob
This is your main volume knob for everything the crowd hears. Turn it up or down to set how loud the whole mix goes out to the sound system.
tip: Watch the master level meter and keep it out of the red — if the CLIP indicator blinks, you're sending too hot a signal to the speakers and it can distort. Set your channel TRIMs and faders properly first, then use this as the final overall level.
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Adjusts the overall output volume sent to the [MASTER 1] and [MASTER 2] terminals — the main sound going to your speakers or the venue system. The master level indicator lights up to show the output level.
Master EQ (HI, MID, LOW) knobs
These let you tweak the tone of your entire mix at once — useful for adjusting to a room that's too boomy or too bright. HI for overall brightness, MID for body, LOW for overall bass. Boost by turning right, cut by turning left.
tip: Use these gently to adapt to the room, not for creative effects. If the venue sounds boomy, a small cut on LOW here fixes the whole night without touching every track. Keep them near center as your neutral starting point.
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Three tone controls that shape the overall master sound. By default (Master Out setting) they affect only the main output; if [Master EQ] is set to [Master and Booth Out] in the Utility settings, they also affect the booth monitor. Each band ranges -26 dB to +6 dB (HI at 10 kHz, MID at 1 kHz, LOW at 20 Hz).
BOOTH LEVEL knob
This controls the volume of your own monitor speaker in the DJ booth, separate from what the crowd hears. Turn it up so you can hear yourself clearly without changing the volume for the dancefloor.
tip: Because it's independent of the main output, you can crank your booth monitor loud enough to beatmatch by ear even if the room volume stays constant. By default the microphone is also sent to the booth (Mic Output to Booth is On).
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Adjusts the volume of the sound sent to the [BOOTH] terminals, which feed a booth monitor speaker. This is independent of the MASTER LEVEL knob.
JOG FEEL knob
This changes how heavy or light the big platter feels when you spin it. Turned one way, the wheel feels stiff and slow like a real vinyl record; turned the other way, it feels loose and easy to flick. It doesn't change the sound directly — it changes the physical feel of scratching and nudging tracks.
tip: If you scratch, a heavier setting gives you more control and a vinyl-like grip. If you mostly do quick nudges to line up beats, a lighter setting responds faster with less effort.
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Adjusts the resistance (the so-called 'weight') felt when turning the jog wheel. Turning it clockwise increases the weight; counterclockwise decreases it.
MIX knob (headphones)
This blends what you hear in your headphones. On one end you hear only the track you're secretly previewing (the next song you're about to bring in); on the other end you hear only what the crowd is hearing. Anywhere in between mixes the two so you can line up the next track against the current one.
tip: Keep it somewhere in the middle so you can hear both the live mix and your incoming track at the same time — that's how you beatmatch by ear before opening the fader.
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Adjusts the balance in your headphones between the master (main) sound and the sound of whichever channel you've selected with its [CUE] button. Set fully to [CUE] to hear only the cued channel; set fully to [MASTER] to hear only the main output.
LEVEL knob (headphones)
This is simply your headphone volume knob. It controls how loud everything is in your headphones and has no effect on what the audience hears.
tip: Set this comfortably loud but protect your hearing — you'll often be in a loud room, so resist cranking it to the maximum for long sets.
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Adjusts the volume of the sound sent to the [PHONES] terminals (headphone jacks). Note that the Link Cue preview volume is set separately with [LINK Preview Volume] in the Utility settings or on the [MIXER SETTINGS] screen.
PARAMETER knob (Sound Color FX)
This is a second dial for the currently chosen color effect. While the per-channel COLOR knobs decide how much of the effect each channel gets, this knob fine-tunes the character of the effect itself — for example, how long an echo tail lasts or how aggressive a filter's edge sounds.
tip: Pick your Sound Color FX first (SPACE, DUB ECHO, SWEEP, NOISE, CRUSH, or FILTER), then experiment with this knob before a set so you know what each effect's sweet spot feels like — the response is very different from one effect to the next.
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Adjusts the quantitative (amount) parameter for the currently selected Sound Color FX. The exact effect depends on which FX is active — for example, Feedback for SPACE and DUB ECHO, center frequency for SWEEP, noise volume for NOISE, crush amount for CRUSH, and resonance for FILTER.
TIME knob (Beat FX)
This sets the timing of the beat-synced effect — for instance, how long the gap is on an echo, or how fast a filter sweeps back and forth. It works alongside the BEAT buttons, which snap the timing to musical beat fractions; this knob lets you dial in a more precise or off-grid timing by hand.
tip: Hold the [TAP] button and turn this knob to nudge the effect's BPM up or down by 1 at a time — handy when the auto-detected tempo is slightly off.
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Adjusts the time parameter for the selected Beat FX (for example, delay time, moving cycle, or effect time depending on the chosen effect). Holding the [TAP] button while turning it adjusts BPM in increments of 1.
LEVEL/DEPTH knob (Beat FX)
This is the 'how much' dial for the beat effect — turn it up for a heavy, obvious effect and down for a subtle touch. All the way down means you hear the track with no effect at all, which makes it your safe starting and exit point.
tip: Start with it turned all the way down, switch the effect on, then ease it up so the effect blends in gradually rather than slamming the mix. For HELIX specifically, turning it fully clockwise freezes and holds the output sound.
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Adjusts the depth or intensity of the selected Beat FX, and for many effects the balance between the original (dry) and effected (wet) sound. Turning it fully counterclockwise outputs the original sound only.
Rotary selector
This is your main browsing dial for finding and loading tracks. Spin it to scroll through your music, push it in to pick something. It has clever shortcuts too: hold and spin to jump quickly through long lists by letter or by page, and on the waveform view hold it to switch into a mode where spinning zooms into the waveform or fine-tunes the beat markers.
tip: When digging through a big alphabetical library, press and hold then spin to jump straight to the letter you want instead of scrolling one track at a time.
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A push-and-turn knob for navigating the touchscreen. Turning it moves the cursor and highlights items; pressing it selects the highlighted item. Pressing and holding activates jump modes (Alphabet Jump on alphabetical lists, Page Jump on other lists), and on the waveform screen pressing and holding switches between Zoom and Grid Adjust modes, then turning zooms the waveforms or adjusts the beatgrid.
Sliders & faders
Channel fader
This is the main volume slider for one deck. Push it up to bring that track into the mix, pull it down to take it out. You have one for each channel, so these are what you use to blend tracks in and out during a mix.
tip: You can change how the fader responds: Curve1/2/3 range from a smooth, gradual fade to a sharp cut near the top. Choose a gradual curve for long blends, or a steeper one if you want the track to jump in quickly.
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A vertical slider that adjusts the output volume of its channel. The response follows the shape set by [Channel Fader Curve] (Curve1, Curve2, or Curve3) in the Utility settings or on the [MIXER SETTINGS] screen. Moving it up increases the volume; down decreases it.
Crossfader
This slider slides between the left group of decks and the right group. Push it left to hear the tracks assigned to the left, right to hear the right, and in the middle you hear both. It's the classic tool for cutting or blending between two sides — especially for scratching and quick transitions.
tip: Set the curve to the sharp Curve1 for scratching and fast cuts (the sound switches abruptly near the edge), or the gentle Curve3 for smooth blends. If you don't want a deck affected by the crossfader at all, set its assign to THRU so it always plays regardless of fader position.
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A horizontal slider that adjusts the volume balance between the channels assigned to its [A] (left) and [B] (right) sides. Assignment is set with [DECK1/2/3/4 Crossfader Assign] (A, THRU, or B), and the response follows [Crossfader Curve] (Curve1 sharp, Curve2 intermediate, Curve3 gradual). Channels set to [THRU] bypass the crossfader entirely.
TEMPO slider
This slider speeds up or slows down the track, mainly so you can match the beat of one song to another. By default the change also raises or lowers the pitch, just like an old record player — but if you turn on Master Tempo, the speed changes while the pitch stays the same.
tip: Use the ±6 range for tiny, precise beatmatching adjustments and WIDE only when you want dramatic speed changes. Turn on [MASTER TEMPO] so changing speed doesn't make vocals sound higher or lower, and press [TEMPO RESET] to snap instantly back to the track's original speed.
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Adjusts playback speed of the loaded track. Moving toward [+] increases speed; toward [-] decreases it. The adjustable range cycles through ±6 (0.02% steps), ±10 (0.05%), ±16 (0.05%), and WIDE (0.5%) each time you press the [TEMPO ±6/±10/±16/WIDE] button; WIDE reaches ±100% (the track stops at -100%).
Switches & toggles
BEAT FX selector switch
This dial picks the flavor of the master effect you're about to unleash — echoes, reverb tails, filter sweeps, stutters, and more. It just chooses the effect; you still need to switch it on with the ON/OFF button or the X-PAD, pick a channel with CH SELECT, and set the beat length with the BEAT arrows.
tip: DELAY, ECHO, and REVERB are the easiest to blend in cleanly — turn the LEVEL/DEPTH knob up gradually so the effect creeps in rather than slamming. For dramatic build-ups try FILTER or ROLL synced to a full beat, and use the FX FREQUENCY (LOW/MID/HI) buttons to apply the effect to just one part of the sound.
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A rotary switch in the Beat FX section that selects which Beat FX (tempo-synced effect) is active. Options include DELAY, ECHO, PING PONG, SPIRAL, HELIX, REVERB, FLANGER, PHASER, FILTER, TRIPLET FILTER, TRANS, ROLL, TRIPLET ROLL, and MOBIUS.
Display & indicators
Touchscreen
This is the brain-screen of the unit where you see everything: your track lists, the waveforms (the visual squiggles showing the music), cue points, effects info, and all the menus. You tap tracks to load them, drag on the overall waveform to jump to a spot, and flick to scroll through your library.
tip: Touch the overall waveform on the playback screen to preview or jump to a point in the track. On the browse screen you can touch a track's waveform in the PREVIEW column to hear it in your headphones before loading it. Operate it with a fingertip only — never use a pen, pencil, or sharp fingernail, which can damage it.
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The large central color display. It shows the source selection (SOURCE), track browsing (BROWSE), waveforms during playback, and various settings screens. You navigate by touching, flicking, and using the rotary selector. Screens include the waveform playback view, browse lists, INFO, SHORTCUT, and MIXER SETTINGS.
Jog display
This is the little round screen in the middle of each platter. The dot around the edge spins like a record needle so you can see the music playing and where you are. It also lights up little labels to tell you at a glance whether Slip mode, Vinyl mode, Sync, or Master are switched on, and shows the track's cover art.
tip: Watch the spinning indicator to gauge your position and speed — it stops when the track is paused, just like a real platter. You can set it to show custom artwork instead of the track's cover via 'Image On-Jog Display' in the Utility settings, and adjust its brightness there too.
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The circular color screen in the center of each jog wheel. It shows the loaded track's artwork (or a custom image), a spinning playback point indicator, and status indicators for SLIP, VINYL, SYNC, MASTER, and cue/loop/Hot Cue points. During a loop it shows the number of beats.
Channel level indicator
This is the little ladder of lights that shows how loud each track is coming into the mixer, before you've moved the volume fader. It's your visual check on whether a track is running at a healthy level or too hot.
tip: Aim to have the lights peaking around the upper-middle of the range (not constantly slamming the top) using the TRIM knob — this gives you a strong, clean signal with headroom to spare. Because it reads the level before the fader, it shows the true incoming loudness regardless of where you've set the channel fader.
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A vertical row of lights on each channel in the mixer section that displays the volume level of that channel's input, measured before the sound passes through the channel fader.
Master level indicator
This is your main output meter. It shows how loud the overall mix leaving the unit actually is, before it reaches your amp or speakers. Watch it to keep the sound strong but not overloaded.
tip: Aim for the meter to sit around the upper-middle segments during the loudest parts of your set, with the top CLIP segment only occasionally flickering. If it's constantly slamming the top, turn down the MASTER LEVEL knob to avoid distortion.
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A row of LED segments in the master section that displays the volume level of the master sound being sent out through the [MASTER 1] (XLR) and [MASTER 2] (RCA) terminals. The scale runs from -∞ up through the marked points (roughly -30 to CLIP) and lights more segments as the output gets louder.
CLIP indicator
A warning light. When it flashes, your main output is too hot and the sound is being crushed into ugly distortion. It's the unit telling you to back off the volume.
tip: If it blinks regularly, lower the MASTER LEVEL knob and/or pull down the individual channel TRIM knobs. You can also enable Master Peak Limiter in the Utility settings (Audio Output category) to automatically tame sudden nasty digital clips.
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A dedicated indicator in the master section that blinks when an excessive (overloaded) volume level is being output from the [MASTER 1] or [MASTER 2] terminals.
USB 1 indicator
A little activity light for the first USB slot. When it's flashing, the unit is busy talking to your USB stick or drive — loading tracks, saving cue points, and so on.
tip: Never yank out a USB device while this light is blinking, or you risk corrupting your rekordbox data. Always press the USB 1 STOP button first and wait for the light to stop blinking before pulling the device out.
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An indicator next to the USB 1 port that blinks while the unit is communicating with (reading from or writing to) a USB device connected to USB 1.
USB 2 indicator
The same activity light, but for the second USB slot. Flashing means the unit is actively reading from or writing to whatever's plugged into USB 2.
tip: Same rule as USB 1: press the USB 2 STOP button and wait for the light to go dark before removing the device. Having two USB slots lets you keep your library on one and use the other for recording or a guest DJ's stick.
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An indicator next to the USB 2 port that blinks while the unit is communicating with (reading from or writing to) a USB device connected to USB 2.
MIC 1 CLIP/SIGNAL indicator
Tells you your microphone is working and how hot it is. It lights to confirm sound is coming in, and warns you when you're shouting or the mic is turned up too far and the sound is about to distort.
tip: Set the MIC 1 LEVEL knob so this indicator lights steadily when you talk but only hits the clip warning on your loudest words. If it's constantly at clip, turn the LEVEL knob down.
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A two-purpose indicator in the MIC section tied to the [MIC 1] input. It shows when a signal is present at the microphone input and warns when that signal level is clipping (too loud/overloaded).
MIC 2 CLIP/SIGNAL indicator
The same signal-and-warning light, but for the second microphone input. It confirms mic 2 is picking up sound and flashes a warning when that mic is too loud and starting to distort.
tip: Use the MIC 2 LEVEL knob to keep it just below the clip warning. If you're using two mics, set each one's level independently by watching its own indicator.
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A two-purpose indicator in the MIC section tied to the [MIC 2] input. It shows when a signal is present at the microphone input and warns when that signal level is clipping.
Tempo Reset indicator
Shows whether the track is locked to its natural speed. When lit, the deck ignores the position of the tempo fader and plays the song at exactly the speed it was recorded — handy for instantly snapping back to normal after you've been messing with the tempo.
tip: If your tempo slider is way off but the track sounds like it's playing normally, check this light — it means Tempo Reset is active and the fader is being ignored. Press TEMPO RESET again to hand control back to the slider.
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An indicator built into the TEMPO RESET button on the deck. It lights up when Tempo Reset is turned on, meaning the track is playing at its original recorded speed regardless of where the TEMPO slider is physically set.
SonicLink headphones indicator
A status light for wireless monitoring headphones. Its blink pattern tells you where you are in the process: slow blink means it's on and looking, fast blink means it's actively pairing, and solid means you're connected and can hear your cue through the wireless headphones.
tip: To pair, turn SonicLink on in the Utility settings (Mixer category), press and hold the front-panel PAIRING button (watch for the fast blink), then put your SonicLink headphones into pairing mode. Once paired, they reconnect automatically next time — no PAIRING button needed.
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An indicator on the front panel that shows the connection status of AlphaTheta SonicLink wireless headphones. It blinks slowly when SonicLink is turned on and waiting, blinks fast during pairing, and stays lit once connected.
Jacks & connectors
USB 1 port
The main slot where you plug in your USB stick loaded with music. Insert it straight in until it stops. This is how you get your rekordbox library and audio files into the unit to play them.
tip: Insert and pull the stick straight in and out — don't force it sideways or you can damage the port cover. Don't use a USB extension cable or a hub, as that can interrupt communication. If your library isn't in OneLibrary format, convert it in the latest rekordbox first or the unit won't read it properly.
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A USB Type-A port for connecting a USB mass storage device (flash memory or hard disk). It supports FAT16, FAT32, exFAT, and HFS+ formats (not NTFS) and supplies power up to 5 V/1 A. This unit only supports the OneLibrary rekordbox format.
USB 2 port
A second slot for a USB stick or drive. Having two means you can keep one plugged in for your library while using the other for a backup, a recording target, or to let another DJ plug in their own stick without unplugging yours.
tip: Great for back-to-back sets — one DJ's music stays loaded on USB 1 while the next DJ preps on USB 2. You can also use one USB device as the recording destination for Master Rec while playing tracks off the other.
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A second USB Type-A port with the same specs as USB 1: supports FAT16, FAT32, exFAT, and HFS+ storage devices (not NTFS), supplies 5 V/1 A, and works with the OneLibrary rekordbox format.
PHONES terminals (1/4" stereo + 3.5 mm stereo mini)
This is where you plug your headphones in so you can listen (cue) to a track privately before playing it out to the room. There are two sizes of socket so you can use big DJ headphones or small earbud-style plugs without an adapter.
tip: Don't plug headphones into both jacks at once — the manual warns this can lower the sound quality or volume. Pick one and stick with it.
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Two headphone output jacks on the front panel: one full-size 1/4" stereo jack and one 3.5 mm stereo mini jack. Both carry the headphone monitor signal, whose volume and source blend are controlled by the HEADPHONES LEVEL and MIX knobs.
Other
Jog wheel
This is your record platter. In Vinyl mode, pressing the top stops the music and spinning it scratches the track like a real vinyl record. In Normal mode, nudging the outer edge speeds up or slows down the track slightly to help you line up two songs (called pitch bending). Turning it while paused lets you inch through the track frame by frame to find an exact spot.
tip: Use the JOG FEEL knob to make the wheel feel heavier (more like real vinyl) or lighter (quicker to spin). Don't rest anything on top of it — the touch sensor is in the top surface and pressure there triggers scratching or stopping. Turning the wheel while holding SEARCH or TRACK SEARCH does super-fast searching through a track or through your tracks.
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The large touch-sensitive platter on each deck used for scratching, pitch bending, searching, and adjusting the beatgrid. A sensor in the top detects touch. Its behavior depends on the jog mode (Vinyl or Normal) set with the VINYL (JOG MODE) button, and its resistance is set with the JOG FEEL knob.
X-PAD
This is a slide-your-finger control for effects. Touch it and the effect turns on; drag your finger up and down the strip and you're changing the effect live — for example, sweeping a filter or shortening an echo. It's built for quick, expressive tweaks with your fingertip during a performance.
tip: Great for dramatic build-ups: hold your finger on the strip and slide it to make an effect rise or fall in intensity, then lift off to snap back to normal. Because it engages the effect the moment you touch it, it's faster and more hands-on than turning the TIME knob.
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A touch-sensitive strip in the Beat FX section. Touching it turns the current Beat FX on, and sliding your finger along it adjusts the effect's time and quantitative parameters in real time. The operating position is shown as X-Pad status on the touchscreen.
Side panels
Jacks & connectors
USB port (Type-C, for PC/Mac)
This is the cable connection to your laptop. It lets the XDJ-AZ act as a controller for DJ software and also sends the computer's sound into the unit, so you can play tracks straight from rekordbox or Serato.
tip: Push the cable in straight — the manual specifically warns not to apply force up, down, or sideways. Connect the unit directly to the laptop rather than through a USB hub for reliable performance.
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A USB Type-C port on the rear panel for connecting a PC/Mac running rekordbox (Link Export) or Serato DJ Pro. On Windows you must first install the dedicated audio driver and the rekordbox USB connection driver; Mac needs no driver. The output level from this port is adjustable via the USB Output Level setting (-19 dB default, -15/-10/-5 dB).
LINK port
This is a network socket that lets the XDJ-AZ talk to other AlphaTheta players or your laptop over a wired connection, so they can share track data and stay in sync. It's mainly for bigger setups where you're linking extra gear together.
tip: Turning on PRO DJ LINK Mode disables Deck 3 and Deck 4 on the unit, and you can't use it at the same time as the unit's built-in Wi-Fi. Only turn it on when you're actually linking to another player.
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A wired LAN port (100BASE-TX) on the rear panel used for PRO DJ LINK. It connects to a LAN port on a PRO DJ LINK compatible player (up to 2 players via a switching hub) or a PC/Mac running rekordbox. To link with another player, set PRO DJ LINK Mode to On in Utility settings. Use a CAT5e or higher STP cable.
MASTER 1 terminals (balanced XLR)
This is your main output to the big speakers — the sound the whole room hears. XLR is the professional 3-pin connector that runs long cables to a PA system without picking up hum or noise.
tip: Only connect these to balanced inputs. The manual warns that using an XLR-to-RCA adapter to feed unbalanced gear causes noise and poor sound — use the MASTER 2 RCA outputs for that instead. Never plug in phantom-power sources or another product's power cord here.
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The primary master output, using balanced XLR connectors. Rated output is +25 dBu into 10 kΩ, standard output +6 dBu with 360 Ω or less output impedance. Volume is set by the MASTER LEVEL knob and can be trimmed with Master Attenuator (0/-6/-12 dB).
MASTER 2 terminals (RCA)
This is a second main output that carries the same room sound as MASTER 1, but with the everyday RCA plugs (the red-and-white connectors). Use it for gear that doesn't take XLR, like many powered speakers or a home amp.
tip: This is the correct output to use for any unbalanced input (RCA gear), rather than forcing the XLR MASTER 1 output through an adapter.
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The secondary master output using unbalanced RCA connectors. Rated output is +21 dBu into 10 kΩ, standard output +2 dBu with 700 Ω or less output impedance. Shares the same master signal and MASTER LEVEL/Master Attenuator control as MASTER 1.
BOOTH terminals (1/4"/6.35 mm TRS)
This feeds a separate speaker for the DJ (usually pointed at the booth) so you can hear what you're doing regardless of how loud the room is. You control its volume on its own knob, so you can crank your booth speaker without changing what the crowd hears.
tip: Use balanced connections only — the manual warns unbalanced inputs cause noise and poor sound. If you don't want your mic bleeding into the booth speaker, set Mic Output to Booth to Off in Utility settings.
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A balanced output for a booth monitor speaker, using 1/4"/6.35 mm TRS jacks. Its volume is set separately by the BOOTH LEVEL knob, independent of the master. Level can be trimmed with Booth Monitor Attenuator (0/-6/-12 dB) and set to mono or stereo. Whether the mic is sent here is controlled by Mic Output to Booth (default On).
Signal GND terminal
If you plug in a real turntable, it usually has a thin single wire with a spade connector — screw it onto this post. It gets rid of the loud humming buzz that turntables otherwise make.
tip: Only needed when you're using a turntable through the LINE/PHONO inputs set to PHONO. If you hear a persistent hum with a turntable connected, this loose ground wire is almost always the cause.
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A grounding screw terminal for connecting a turntable's ground (earth) wire. It reduces the unwanted hum and noise that occurs when a turntable is connected to the unit's PHONO inputs.
LINE/PHONO terminals (RCA)
This is where you plug in outside sound sources — a turntable, a CD/media player, or another line device — so you can mix them through the XDJ-AZ alongside your digital tracks. You tell the unit whether it's a turntable (PHONO) or a regular player (LINE) in the settings.
tip: The manual warns a loud volume can blast out if the input setting doesn't match the source — always confirm PHONO vs LINE before turning up. Set it wrong (LINE for a turntable) and you'll barely hear it; set PHONO for a line device and it'll be deafening and distorted.
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RCA input jacks that accept either line-level devices (multi players, other line sources) or phono-level output from a turntable with an MM cartridge. The input type is chosen per deck with DECK3/DECK4 Input Select (LINE or PHONO) in Utility settings, or CH3/CH4 Control Tone for time-code signals.
MIC 1 terminal (XLR or 1/4"/6.35 mm TRS)
Plug a microphone in here for announcements, hosting, or vocals. It takes both the pro 3-pin plug and the smaller jack, so most mics work. After connecting, press the ON button in the MIC section and bring up the LEVEL knob to be heard.
tip: If you get squealing feedback (howling), turn on Feedback Reducer in Utility settings — use Heavy for speeches, Light when singing to keep the sound quality. Use the TALK OVER button to automatically duck the music while you talk. Note the LEVEL knob gets loud fast when turned clockwise.
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A combo microphone input on the rear panel accepting either an XLR or a 1/4"/6.35 mm TRS plug. Standard input level is -57 dBu into 3 kΩ. Level is set by the MIC LEVEL knob, tone by the MIC EQ (HI/MID/LOW) knobs, and it's turned on with the MIC ON button.
MIC 2 terminal (XLR or 1/4"/6.35 mm TRS)
A second mic socket so you can have two microphones going at once — for example one for you and one for a guest or a second host. It works exactly like MIC 1 with its own volume and tone controls.
tip: You can choose which mic (or both) gets Beat FX applied using the BEAT FX MIC setting (MIC1, MIC2, or MIC1+2). If a mic isn't in use, leave its ON button off to avoid picking up stray noise and feedback.
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A second combo microphone input identical to MIC 1, accepting XLR or 1/4"/6.35 mm TRS. Same -57 dBu/3 kΩ input spec, controlled by its own MIC LEVEL and MIC EQ (HI/MID/LOW) knobs and the MIC ON button.
AC IN
This is simply where the XDJ-AZ gets its electricity. No sound passes through it — but nothing works without it. Plug the included cord in here first, then the wall, and connect everything else before you finally switch on.
tip: Always use the supplied power cord — don't substitute a random one. Connect all your other cables (speakers, USB, LAN) before plugging in and powering up, as the manual advises, to avoid pops and to protect your gear.
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The power inlet on the rear panel. You connect the supplied power cord here and plug the other end into a wall outlet. The unit runs on AC 110 V to 240 V (50/60 Hz) and draws about 60 W in use, dropping to about 0.3 W when off.
Other
Kensington security slot
This has nothing to do with sound — it's a small reinforced hole where you can attach a security cable to physically lock the unit to a table or fixture, so it can't be easily walked off with.
tip: Great for permanent installs, bars, clubs, or anywhere the gear is left unattended. Loop the lock cable around something solid and immovable, not just the booth furniture.
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A standardized anti-theft slot on the rear panel designed to accept a Kensington-style cable lock.
What it is
The AlphaTheta XDJ-AZ is a standalone four-channel all-in-one DJ system with a built-in mixer and dual media-player decks.
The AlphaTheta XDJ-AZ is an "all-in-one" DJ system: it combines the music player, the mixer, and the hands-on controls that a DJ normally gets from three separate boxes into one flat, tabletop unit. Because it's a standalone system, you can plug in a USB stick full of music, connect it to speakers, and perform a full set without ever using a laptop. It has a large color touchscreen in the middle, two big jog wheels (one on each side) for scratching and nudging tracks, and a four-channel mixer section down the center so you can blend up to four tracks at once. It sounds like a professional club setup because the mixer, effects, and outputs are essentially the pro DJ-booth gear condensed into a single deck.
First session: get a sound out of it
- 01Plug the supplied power cord into AC IN on the rear, and connect your speakers or amplifier to the MASTER 1 (XLR) or MASTER 2 (RCA) outputs on the rear.
- 02Press the power (⏻) button on the rear to turn the unit on.
- 03Insert a USB drive into the USB 1 port on top. For a rekordbox library it must be in the OneLibrary format, but a drive of plain music files (MP3, WAV, etc.) also works.
- 04Press the SOURCE button, then touch your USB device on the touchscreen to select it.
- 05Press the BROWSE button, turn the rotary selector to highlight a track (press the selector to open folders), then press the LOAD 1 button to send it to the left deck.
- 06Press the ►/|| button on the left deck to start playback, and turn that channel's TRIM knob up until the channel level meter lights healthily (not into the red).
- 07Push that channel's fader all the way up. Turn up the MASTER LEVEL knob until you hear sound through your speakers. (By default the crossfader is set to THRU/bypass, so its position won't cut the sound.)
- 08To hear the track in headphones before the crowd does, plug headphones into the PHONES jack on the front, press that channel's CUE button, and use the headphones MIX and LEVEL knobs to set what you hear.
How the sound flows
Music can come from several sources: a USB drive plugged into USB 1 or USB 2 on top, a computer running rekordbox or Serato DJ Pro over the rear USB (Type-C) port, a phone or laptop over Bluetooth, turntables/media players plugged into the rear LINE/PHONO jacks, or the cloud and streaming services (rekordbox CloudDirectPlay and Beatport) over Wi-Fi. You load a track onto one of the four decks. Each deck's sound then runs down a vertical channel strip in the center: first the TRIM knob (input volume), then the three-band EQ/ISO knobs and the COLOR (Sound Color FX) knob for tone-shaping, then the channel fader for volume. All four channels meet at the crossfader, which lets you slide between them, and then flow into the master section. The MASTER LEVEL knob and Master EQ set the final club output that leaves the MASTER 1 (XLR) and MASTER 2 (RCA) jacks on the rear. Microphones and a booth monitor have their own paths, and the Beat FX section can add tempo-synced effects to any channel or the whole master. Separately, headphones plug into the front so you can preview and beat-match the next track before the audience hears it, controlled by the CUE buttons and the headphones MIX and LEVEL knobs.
Questions owners actually ask
Do I need a laptop to use it?+
No. The XDJ-AZ is a fully standalone system, so you can play a whole set straight from a USB drive with no computer. If you prefer, you can still connect a Mac or PC running rekordbox (for free, since this unit unlocks Performance mode) or Serato DJ Pro over the rear USB port and use the unit as a controller.
What USB drives and file types does it accept?+
Use drives formatted as FAT16, FAT32, exFAT, or HFS+ — NTFS is not supported, and USB hubs and external CD/DVD drives won't work. It plays MP3, AAC, WAV, AIFF, Apple Lossless (ALAC), and FLAC files. If you're using a rekordbox library, it must be converted to the OneLibrary format first, which you do in rekordbox on your computer.
How many decks can I actually play at once?+
Up to four. There are two physical jog-wheel areas (left and right), and each side has a DECK SELECT button that switches it between decks 1 and 3 (left) or decks 2 and 4 (right). All four channels appear on the mixer at the same time.
How do I record my set?+
Insert a USB drive, press the MIXER SETTINGS button, select the USB device on that screen, and touch Rec. It records exactly what leaves the master outputs to a WAV file (about 90 minutes fits on 1 GB of free space). Touch Rec again to stop, or Track Mark to split the recording into separate files.
Can I use wireless headphones or play music from my phone?+
Yes to both. The unit supports AlphaTheta's SonicLink wireless headphones — turn SonicLink on and use the front PAIRING button to connect them. Separately, Bluetooth lets you feed audio from a phone, tablet, or computer into the mixer as an input source (set a deck's input to Bluetooth in the settings).
Can I play from the cloud or a streaming service?+
Yes. With a Wi-Fi internet connection you can use rekordbox CloudDirectPlay to load tracks you've uploaded to Dropbox or Google Drive, and you can log in to Beatport Streaming to play tracks directly. A line speed of about 20 Mbps or faster is recommended, and loaded streaming tracks are cached temporarily on the connected USB drive.
What's the difference between Sound Color FX and Beat FX?+
Sound Color FX are quick, tone-based effects (like Filter, Noise, Crush, or Space) that you apply per channel using the COLOR knob and shape with the PARAMETER knob. Beat FX are tempo-synced effects (Delay, Echo, Reverb, Flanger, Roll, and more) that lock to the track's beat; you pick the effect with the BEAT FX selector switch, choose which channel or the master it hits with the CH SELECT buttons, and turn it on with the ON/OFF button or the X-PAD.
There are two headphone jacks on the front — should I use both?+
Use only one at a time. The front has both a 1/4-inch stereo jack and a 3.5 mm stereo mini jack, but plugging headphones into both simultaneously can lower the sound quality or volume.
The official manual
Open in new tab ↗Ask anything about the AlphaTheta XDJ-AZ — “how do I sync it to my DAW?”, “why is there no sound?”, “what does the weird button combo do?” — and the AI answers from the official manual.