Moving to new grounds

March 24, 2018

This blog will move to the DSP Synthesizers server next week.

It will improve integration with the main site and use its own WordPress installation.

At the same time the webshop will be transfered to the Woocommerce platform.

You can already now visit the webshop at but cant buy anything until monday 3-26.

Please make a visit and make a review of the shop.

3 new modules will be available on Monday.



V-Edge – The Coolest Touch Synth?

March 13, 2018



The V-Edge is a 2 Octave Phase Distortion Touch Synthesizer.
The name comes from it’s wedge shaped design.

Featuring both MIDI and CV/Gate it wont just look great on your desktop but also performs well with your gear.

Working standalone it hosts dual CZ1 phase distortion oscillators for a great sound.

It will be released on 31st of March and the price is $139


  • 25 key monophonic touch keyboard
  • Dual oscillator with pitch and detune
  • Phase distortion filter with peak and modulation
  • AR Envelope generator
  • MIDI In/Out
  • CV/Gate output
  • Headphone output
  • Aluminum panel with 6 knobs

Order the V-Edge Touch Synthesizer $139

(Shipping will start on the 31st of March after the preorders have been fulfilled)

You can preorder it and the $5 will be refunded on final payment.

Preorder the V-Edge Touch Synthesizer $5

(Orders on the preorder list will be shipped first)

Accepted preorders:

  1. Stephen Davis


SP12/Drumulator now as DIY

March 13, 2018

Panel/PCB/Chip kit available from $69.

Build instructions in the menu to the right.


CZ1 Kit

February 20, 2018



This is the CZ1 PD VCO available as a kit.
The kit is beginner level and easy to build.



The kit is $75 including shipping and contains the PCB, alupanel and all the parts for building the CZ1 phase distortion 3HP module.

Order the full 3HP CZ1 PD-VCO Kit $75 including shipping

CZ1 PD VCO Oscillator

February 16, 2018


The 3HP CZ1 module is a phase distortion oscillator in a 3HP module.

It replicates the famous PD waveform and can make resonant sweeps without a filter.

Based on the CZ-1 chip ( it features a 1V/Octave pitch input with a 5 octave range and a peak index CV input with a range of 0.2x – 16x.

Both inputs have an attenuator knob doubling as a parameter dial when the CV’s are not plugged in.

It also has a simple Gate VCA input that enables it to be used as a complete synth if you don’t have any EG and VCA modules, i.e with an analog sequencer it will perform as an acid box.

In just 3HP it is a great sounding VCO featuring West-Coast synthesis.


  • Pitch CV 1V/Oct, 5 octaves, 8 – 261Hz range.
  • Peak CV multiplier index, 0.2x – 16x range.
  • Gate input CV for standalone sequencer/keyboard play.
  • 66Khz rate Virtual Analog Engine.
  • Mono output.
  • Screen printed aluminum panel.
  • Thonkiconn Long-shaft pots and jacks.
  • Eurorack 10-pin IDC Power connector. 12v 40mA

The module is $99 including shipping.

Available at:

Rx8 Drum Module

February 9, 2018


The Rx8 is a 8 voice polyphonic drum module in a 4HP space.

It has that iconic vintage 808 sound and those snappy analog beats including Kick, Snare, Closed Hat, Open Hat, Tom, Claps Cowbell and Rimshot.

The sound is selected with a knob or CV and crossfades 2 adjacent sounds on the scale.

It is polyphonic meaning once a triggered sound is in decay it wont be interrupted or cut by a new trigger unless it’s the same sound.


Each drum is also tuneable with the Tone knob and the Tone-CV is read only at trigger time so pitch is also polyphonic.

The module can be played with a 1 channel analog sequencer (CV/Gate) or direct from a CV/Gate keyboard.

The trig-input is positive-edge triggered and the output is a mono mix of the playing drums.

The module is built with Thonkiconn jacks, 808-knobs and a screen-printed aluminum panel.

The module uses a custom designed chip not available for DIY but the u808 chip, using the same sound, is available at



  • 8 Drum sounds: Bass, Snare, Closed hat, Open hat, Tom, Claps, Cowbell and Rimshot selectable by knob and CV.
  • 40Khz 12-bit PCM sample rate, 15%  – 400% playback rate.
  • Adjacent sounds on the scale crossfades into each other so midway between BD and SD it will play a 50/50 mix.
  • Polyphonic Tone knob for tuning, CV Control-able.
    It samples the CV when a drum is triggered.
  • Positive edge Trig input.
  • Mixed mono output.
  • Screen printed aluminum panel.
  • Eurorack 10-pin IDC Power connector. 12v 40mA

(Note: The drum chip is not available for DIY. They are exclusive to the Rx8-module)

$149 including shipping.

Available at:

4HP DX Drums – Limited Edition

January 20, 2018


dx copy

Want one of these vintage drum modules?
They have that incredible nostalgic 80’s drum sound


  • 4 Classic DX drum sounds, Bass, Snare, Hihat and Claps
  • 2 – 40KHz variable sample rate u-law PCM
  • Global pitch knob, CV control able
  • Screen printed 4HP Aluminum panel
  • 6 Thonkiconn jacks
  • Fully protected inputs (CV and Trig)
  • +12v 40mA 10-pin IDC eurorack power connector

(Note: The drum chip is not available for DIY. They are exclusive to the DX-module)

$149 Including shipping.

Available at:



SP-12/Drumulator – Anniversary release

January 8, 2018


The SP-12/Drumulator 10HP module is available to order.


  • 8 Classic drum sounds, 6 with adjustable pitch
  • 2 – 40KHz variable sample rate u-law DPCM
  • +6dB Accent input
  • Screen printed 10HP Aluminum panel
  • 16 Thonkiconn jacks
  • 6 Davis pitch knobs, CV control able
  • Fully protected inputs (CV and Trig)
  • Hot audio output level (+-6v)
  • +12v 40mA eurorack power connector w. reverse protection

They are professionally built with a screen printed aluminum panel and real PCB’s.

$299 Including shipping.

Available at:



November 29, 2017


The uMIDI2CVplus adds a simple USB MIDI to CV to your eurorack or analog synth.

Works with computer/smartphone/tablet without drivers.


  • One Pitch CV output 1volt/octave, 5 octaves (C2-C7)
  • One Gate output key on/off
  • 2x Auxilary CV outputs 0-5volt.
  • Quad Drum triggers.
  • USB-HID compliant, no driver required
  • 1 Micro-USB input for MIDI and power

This works the same as the USB-MIDI2CV/plus but does not support Hz/Volt and S-trig.

User manual (PDF)

Available at

uMIDI2CV now as DIY

November 18, 2017

In the menu to the right.