Tremolo (TRM-1)

How fast the tremolo pulses. Low settings give a slow throb or on/off; crank it up and the pulsing gets so fast it starts to sound like a ring modulator (a metallic, warbly texture).

tip: You can set speed with this knob OR by tapping the footswitch, and switch freely between the two. After tapping, the knob has a little 'dead zone' so tiny bumps won't change your tempo — move it about 1/10 of its travel to take over with the knob.

How strong the effect is. Turn it down for a gentle wavering; turn it up for a dramatic throb. When you're on the Chop waveform, this knob changes something different — it sets how long the sound is 'on' versus 'off' rather than how deep it is.

tip: On Chop: centered = equal on/off; counterclockwise = short bursts of dropout (longer on-time); clockwise = longer silences (shorter on-time). Also, higher depth usually needs a bit more VOL to stay level-matched.

Balances the volume of the effected sound against your bypassed (dry) sound so the pedal doesn't get louder or quieter when you kick it on.

tip: Use it as a clean boost: turn DEPTH to minimum on the Sine waveform and turn VOL up to push your amp harder for solos — the pedal's high-quality buffer amp does the boosting.

The most powerful control. The first five settings reshape how the pulse relates to your set tempo — from straight beats to eighths, triplets, a repeating rhythmic pattern, or a random 'broken' effect. The sixth is a hands-on Manual mode. Your underlying tempo carries over as you switch modes.

tip: Set your basic tempo in any of the first five modes, then just turn the knob to translate that same rate into different rhythmic feels instantly.

Changes the 'shape' of the pulse, which changes the feel of the tremolo. Push it up to step through the four choices; the left LED color tells you which one you're on.

tip: Shorter on-time waveforms (Shark Fin, Sine) sound quieter than Square and Chop, so you may want to nudge VOL when switching. Try Chop with MODE 'C' (Chaotic) for wild results.

Step on it to turn the tremolo on; step again to turn it off. When off, your guitar signal passes through completely unaffected.

tip: The ON/OFF LED does double duty: it shows the tap tempo (TapView) while you're tapping and glows red to tell you double-speed is active, green for normal speed.

Tap it in rhythm to set the tremolo speed. Hold it down to double the speed (left LED turns red); hold again to drop back to normal (left LED green). In Manual mode it becomes a hands-on trigger for the effect.

tip: When holding for double-speed, the speed ramps gradually — if you lift your foot early it stays at that partial speed, a neat trick for creative sweeps. Hold until TapView stops flashing (about 2.5 sec) to be sure you've hit full double speed.

The default sound at power-up. Warm, vintage, lopsided pulse — the sound most people picture when they think of old-amp tremolo.

tip: This is the go-to for authentic vintage tones; it's the one you get automatically when you turn the pedal on.

An even, gentle rise-and-fall pulse. Slightly less on-time than Shark Fin, so it feels a touch deeper and more evenly pulsing.

tip: Best choice for a smooth, hypnotic wobble, and ideal (with DEPTH at minimum) for using the pedal as a clean boost.

A more dramatic, abrupt on/off pulse. It's not perfectly square — the opto-isolator naturally rounds off the corners, giving it a slightly softened edge.

tip: Reach for this when you want a bolder, more obvious chop-like throb without going full Chop.

A hard, staccato stutter that fully cuts the signal on and off, like flipping a kill switch. It has no 'depth' in the usual sense — instead DEPTH sets how long each on/off segment lasts.

tip: Combine Chop with Manual mode ('M') to use the TAP/DBL footswitch as a hand-controlled kill switch, or with Chaotic mode ('C') for unpredictable stutters.

Tells you which waveform is selected by its color, and turns red when double-speed is active (green for normal).

tip: Glance here to confirm your waveform and whether you're in double-speed before you play.

A visual metronome so you can see how fast the tremolo is pulsing.

tip: When your foot covers this LED during tapping, the ON/OFF LED shows the tempo instead (TapView).

The plain, basic tremolo — one pulse per beat at whatever speed you set.

tip: Start here to learn the pedal; it's the recommended quick-start setting.

Doubles up the pulses with an accented, marching feel. Engaging double-speed pushes it to four pulses per beat with a four-count accent.

tip: As you lower DEPTH, the difference between accented and normal pulses shrinks; with Chop, the accent shows up as a slightly longer on-time.

Gives a rolling, three-against-the-beat swing. Double-speed turns it into a six-count galloping feel.

tip: Great for waltz-like or shuffle grooves; like Eighth mode, lower DEPTH reduces the accent difference.

Plays a built-in repeating rhythmic pattern instead of an even pulse, adding a sequenced, groovy feel. Double-speed swaps in a busier pattern.

tip: Use this to add rhythmic interest to sustained chords without playing the rhythm yourself.

A 'broken tremolo' effect where the pulsing wanders unpredictably around your set tempo.

tip: Try it for solos, and especially pair it with the Chop waveform for strange, glitchy textures.

The tremolo stays silent until you hold down the TAP/DBL footswitch, then it kicks in synced to your foot. With Shark Fin/Sine/Square you get on-demand tremolo bursts; with Chop, the footswitch mutes your signal while pressed.

tip: Set your desired speed with the knob (or tap it in another mode first — the rate carries over), since tapping is disabled once you're in Manual mode.

Where your guitar cable plugs in.

Where the cable to your amp (or the next pedal) plugs in.

Plug in a standard 9V pedal power supply here instead of relying on the battery.

tip: Diamond recommends running it from an adapter; batteries only last about 10–15 hours and cause the depth to drop slightly as they wear down.