Archive for the ‘dsp-G1’ Category

And the PCB’s from

November 8, 2014

Took only 6 hours from drawing to ready PCB’s

Try that from China 🙂



dsp-Gplug MK-II

November 7, 2014

The dsp-Gplug MK-II will run on the SSOP-16 chip.
Measuring 5mm x 6mm, this chip is even smaller than the dsp-G1 8-pin DIP chip.

The chip makes it the smallest stereo VA-synth in the world for sure!

The MK-II will also be available as a standalone SOIC-20 chip for those you that feel comfortable soldering SMT.


dsp-G1 MK-II SSOP16


The dsp-Gplug source

November 3, 2014

If you want to know how the dsp-Gplug is made, the documentation and source code is now available here:

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? 🙂




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.

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

The Q25 MCU

October 3, 2014

The Alesis Q25 Microcontroller is a STM32F103C6 used for the keyscanning.

It’s an ARM Cortex-M3 @72MHz with 32Kb flash and 10Kb SRAM.

One could probably reflash it and run a VA synth straight on the chip but it would require to reverse engineer the MCU board to know what GPIO’s are used for the keyscanner.

Q25 cpu