Noiseless analog tremolo 



The tremolo sound of a vintage amp

TRM1 gives you both the warmth and square wave attack of old tube amplifiers and the jagged triangle waves of modern rock, but without any of the crackling noise or noticeable drops in volume often associated with vintage gear.

With TRM1, you can easily dial in your desired sound, and it is the very first time we offer this intuitive design and no-nonsense layout outside our Custom Shop.

The Speed control naturally sets the speed of the tremolo effect, while the Curve switch toggles between square or triangle waveforms. The Depth control sets the intensity of the tremolo, and if you turn it fully clockwise, the original signal is cut off completely.

When switched OFF (bypassed), TRM1 acts as a unity gain line driver, capable of driving even very long cables without tonal loss or unwanted coloration.


Niklas Schneidermann Opto Tremolo

Niklas Schneidermann (Magtens Korridorer)

“The Caveman Audio Tremolo is simply the best Tremolo I ever played”

Gear used for this demo

– Guitars: Suhr Classic HSS & Fender Am Original 60s Telecaster (Lollar Special T pickups)
– Amp: Victory V40 Deluxe (modded)
– Mics: Shure SM57 & Beyer M160
– Preamp: MPF – Sound KS-2 Pure Class A Tube Mic- Preamp
– Drums: Toontrack Superior Drummer 3 (custom preset)
– Synth: Avid Falcon
– Bass: Sire MM V7 USA with MPF – Sound Bass Pre DI
– Interface: Prism Sound Lyra 2

BOS1 Boost 28 pedal

Alberto Barrero (Composer, Video Maker, Studio & Live guitarist)

“As sweet and pretty as old tube tremolos, but as clean and clear as fresh water… Superb.”


  • Unique RFI protection
  • Silent switching
  • Connectors located on the rear side
  • 10 Year Warranty
  • Road-ready, zinc-plated stainless steel enclosure


TRM1-Tremolo-Rear shot

Technical specifications

  • Input impedance : 1MΩ
  • Output impedance : <100Ω
  • Power requirements: 9-12 VDC @ 50mA
  • Dimensions (metric) : 110 x 145 x 40/65 mm (WxDxH)
  • Dimensions (imperial) : 4.33″ x 5.71″ x 1.57″/2.56″ (WxDxH)
  • Weight: 0,8 kg / 1 lbs. 12 oz.


“I have always liked the sound of the tremolo you find in old vintage amps – but not the noise they added. TRM1 is my take on capturing the sound of this unique effect in a small box – without the noise issues.”

Steen Skrydstrup

Steen Skrydstrup
TRM1-Opto Tremolo

Noiseless analog tremolo 


Additional information

Weight 1 kg
Delivery time

5-8 days