Archive for October, 2014

Frontpanel ready for the dsp-Mx Multimode filter

October 31, 2014

Here is the frontpanel for the dsp-Mx filter.

All parameters have 0-5v CV inputs, even the filter mode can be CV controlled.

And the best, all of the CV inputs run at sample frequency so modulation at audio frequency will do lots of funny stuff 🙂



The dsp-Gplug Analog Modeling MIDI Synth can again be ordered prebuilt

October 23, 2014

The dsp-Gplug VA-synth inside a DIN-plug can now again be ordered prebuilt on the website

It is professionally built and delivered international for just $80.

For sure the smallest VA MIDI Synth in the world.
No competition!

Gplug printed


The dsp-G1 Application Manual v1.0

October 22, 2014

Here is the manual for the dsp-G1 synth chip.

It shows how easy it is to implement and use the chip.

Download here: dsp-G1 manual v1.0

I would say it’s definitely the smallest analog modeling MIDI synthesizer in the world.

A full VA-Synth in an 8-pin DIP chip.

I’ve sold 55 of them so it must be a hit? 🙂




The dsp-Mx Schematics

October 20, 2014


Wrong thinking

October 18, 2014

All of the time I was thinking that people wanted a prebuilt DSP synth.

For the DIYers it is of course better to split the modules and let you build it yourself.

The dsp-Mx breadboarded

October 18, 2014

PSoC4-MINI Blinky

The dsp micro modular line coming up

October 17, 2014

In the next few days the first module of the dsp micro modular line will come up on the site.

This line consists of single DSP chips accepting analog signals and made for DIY builders.

The other chips in the line will be the dsp-Vx, a DCO/FM/Wavetable oscillator and the dsp-Ax, DCA/Chorus/Flanger chip.

PSoC4-MINI Soldered

The dsp-Mx features a +24db 4-pole ladder filter with cutoff and resonance.

The filter is multimode and have selectable LP, HP and BP modes.

It’s controlled through 0-5v CV inputs or MIDI-CC messages, simultaneously.

Input audio is analog -+2.5v with a 96KHz samplerate and output is 16-bit PCM.

Yes, it can be used equally well with MIDI sequencers or analog sequencers. The multimode ladder filter of your dreams.

The DSP chip is a TSSOP-28 but the kit is delivered with it soldered on a breakout board. As simple as the dsp-G1 so it’s for anyone to play with.

You can use it with any audio, synth or VCO/DCO signal.

And the price?
Around $70, cheap for a DIY DSP multimode filter.

Make sure you order one of these.

dsp-G4 Analog Modeling Multitimbral Synth board

October 14, 2014

Here is the PCB for the 4 part multitimbral version of the dsp-G1 synth.
Yes, it’s 4 x dsp-G1 with supporting Components on a single board.
It has 4 synths recieving on MIDI channels 1 – 4.

If there is any interest in this I’ll order PCB’s for it and sell the kit at

dsp-G4 PCB

Gplug shell

October 10, 2014

I’m not a champion at 3D-printing but this is the shell for the dsp-Gplug MK-I

Looks like a Bassets?

Gplug printed

The dsp-Gplug MK-II

October 9, 2014

Say hi to the dsp-Gplug synth mark 2.

Stereo 44.1KHz 16-bit DACs and 2Mbyte wave storage in onboard flash.
That is 47 seconds of sampled waveforms.
All in a MIDI-plug, no external power required.


dsp-G1 MKII