Archive for June, 2016

Release for the K8 Harmonic VCO/LFO Chip

June 30, 2016

The K8 is an upgraded version of the K5/KL5 Additive VCO chip.

1V/Oct Pitch CV for the fundamental frequency.
7 CV inputs for the 1st to 7th harmonic level
1 Sync input
1 Range select input for operating as an LFO or VCO

Available at




Solina keyboard house synth with reverb

June 29, 2016

Evaluating some Accutronics BTDR-2 reverb bricks.

These will turn my Solina string synth into a real house synth.

When these keyboards turn into some hype, I’m not sure how to manage distributing them around the globe?


The 4HP CZ-VCO Module

June 18, 2016


The 4HP CZ-VCO module is a phase distortion oscillator in a 4HP 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 modulation index CV input with a range of 0.125x – 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.

Available as a DIY kit module.

Order the CZ-VCO Kit $75


DIY PCBs and kits for all 4HP modules

June 16, 2016

Orders are available now for PCBs and kits for all DSP Synthesizer 4HP modules.

Available at:





New uLM1 chip

June 8, 2016

The new uLM1 chips features 8 polyphonic drum sounds in a 14-pin DIP chip.
8 Rising edge triggers, global tune CV 15% – 400% frequency and a global analog accent CV with a 6dB – 48dB range.

Sounds include Kick, Snare, Hihat, Tom, Clap, Cowbell, Clave and Cabasa.

Very easy to interface into DIY Projects and a great 80’s drum kit.

Available now at $20 including international shipping.

Order the uLM1 chip