Category Archives: Guitar/Bass Modular

Guitar/Bass Modular

Guitar/Bass Modular

Row 1

  1. (B)assman – Tube Preamplifier
  2. Alemthicc – Tube Preamplifier
  3. Watamp – Tube Preamplifier
  4. Dual Patch 1 In / 3 out
  5. 3 Channel Pan Stereo Mixer

Row 2

  1. Thumb Screwer – Overdrive
  2. HM-424 – Distrotion
  3. Puust – Booster/Clipper
  4. Sombressor – Compressor/Noisegate/Preamp
  5. Femder – Speaker Cabinet Simulator
  6. Warshall – Speaker Cabinet Simulator


HM424 - Distrotion
HM424 – Distrotion

My clone of the” The HM-2 Heavy Metal” pedal, a legend for those who play Death Metal music, named “HM-424” in Eurorack format.
Insane amount of boost and tone-shaping.
The high and low EQ controls are +/-20dB peaking filters at ~88Hz and ~1000Hz.
Swedish Death Metal Chainsaw Buzzsaw sound.

Part of the Guitar/Bass Modular.

Ninjani Diskus
Ninjani Diskus


Sombressor – Compressor

Sombressor – Compressor with Noisegate

Sombressor is a Compressor with Noise gate and a Preamp.
Its based on the ssm2166 IC and has a fet input buffer.
Simple Compressor that does the job!!

Part of the Guitar/Bass Modular.

  • Rotation, Gate, Ratio and Gain
  • Fast/Slow Time and Bypass switch with led indicators.


SSM2166 @ Analog Devices
SSM2166 Data sheet @ Analog Devices

Thumb Screwer


Thumb Screwer – Overdrive

Thumb Screwer is based on the “Legendary” Tube Screamer (TS808/TS9)
Great overdrive with mix piecing nice mids.
Extra tone shaping functions like “Bass boost” and “Diode clipping – (Odd/Even)” settings added.

Part of the Guitar/Bass Modular.

  • Tone, Drive and Level.
  • Bass boost, Bypass and Diode Odd/Even wave shape switches with led indicators.



Watamp Tube Preamplifier

Watamp is a Tube Preamplifier. Based on Orange, Green and similar amplifiers. It has a very sludgy warm buzzy sound. I use it with a 12ax7 or 6N2P-EV tube. (Undecided :#Q)

Part of the Guitar/Bass Modular.

  • Bass, Bass Boost, Treble, Depth and Gain
  • Bypass switch with Led Indicator .


(B)ASSMAN Tube Preamplifier

(B)ASSMAN Tube Preamplifier is based on the Fender BASSMAN 100’s “Bass Instrument” Preamp.
I use it with a 12ax7 or 6N2P-EV tube. (Undecided :#Q)
Great unique sound! 😛

Part of the 424 Guitar/Bass Modular.

  • Bass, Treble, Gain and Volume
  • “Deep” and Bypass switch with led on/off indicators

Schematics @