The BOUM is an analog stereo processor, consisting of a „One-knob“ compressor, a multi-mode distortion circuit and a smooth low-pass filter. Its mission is to enrich audio material with warmth, thickness and, if desired, a lot of aggressiveness. Thanks to a nice and simple user interface this effect unit is very easy to use. It is built in a rugged steel enclosure like the other OTO devices and it feels heavy like the sound it’s putting out!



OTO Boum is a full analog stereo unit for warming up the sounds with a compressor, a distortion generator and a smooth low-pass filter.

The effect is activated or bypassed with a press on the Active button.

You can blend the dry and wet signal thanks to the Mix potentiometer, enabling parallel processing with ease.

Thanks to a gain stage, you can boost the input signal up to 18 dB.

The compressor features a single knob which controls three essential parameters at once (threshold, ratio and makeup gain). This way it is very easy to set the desired compression. But it is possible to fine tune the compression behavior thanks to six different attack and release times which you can select individually. The ratio ranges from no compression to limiter setting.

After the compression section, the signal goes through a 6 dB low cut filter to attenuate the bass frequencies making the processed signal easier to mix with the original one. This filter has four settings: Flat, 75 Hz, 150 Hz and 300 Hz.

The distortion generator features four different circuits for various flavors: boost, tube, fuzz or square wave distortion. It is followed by a smooth and musical 12 dB per octave low pass filter, so you can soften high frequencies.

Additionally there is a noise gate for cutting the signal and eliminating the noise. It can also be used for interesting chopping effects.

Parameters are stored in one of the 36 presets for easy recall. OTO Boum comes loaded with 12 factory presets for instant fun!

It features MIDI control (CC) over all parameters, and it is even possible to switch presets with Program Change.


  • Analog signal path and sidechain
  • One knob compressor (Ratio 1:1 to 1: -1) with attack & release parameters
  • 4 distortions : Boost, Tube, Fuzz and Square
  • Variable HiCut Filter, 12 dB /Oct, from 20 kHz to 10 Hz
  • Gate with threshold up to 0 dB for production purposes
  • Input Gain up to +18 dB
  • Lo Cut Filter : Flat, 75 Hz, 150 Hz, 300 Hz
  • 36 user presets
  • MIDI input: BOUM responds to CCs, Pgm Change, Note
  • Nice and simple user interface via 16 white LEDs
  • Rugged steel enclosure
  • Neutrik® jack connectors
1/4" stereo audio input and output
MIDI input

Rugged metal housing, 145 x 145 x 65 mm

1.0 kg
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€ 19% VAT excl. €445.38 € 19% VAT incl. €530.00
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