I'm building a 4 x 104hp eurorack system mostly from scratch, in part using PCBs designed by others, in part designing my own modules and having PCBs made.

So far the system is made up of a self built case, two meanwell PSUs, 4x bus boards by Modular Synth Lab and:
5x digital CV/Trigger sequencers of my own design and firmware
1x Bela Pepper as drum machine, midi host and reverb running SuperCollider
1x 2-channel stereo mixer with balanced outputs of my own design
2x Ornament and Crime running the Hemispheres firmware
2x Kassutronics CEM3340 VCOs
2x Kassutronics quad attenuverters
2x Kassutronics Moog style ladder filters
2x Fonitronic SSM2044 low pass filters
3x dual VCAs based on the YuSynth schematics
3x ADSR envelope generators based on the YuSynth schematics
2x Isolating EQs of my own design
1x SMR4P multi-VCF by TubeOhm
1x WMD Spectrum VCO
1x modded Marantz PMD222 tape deck for tape echo

I'll be posting sample recordings as the system progresses here.
All recordings made live directly from the synth.

þorn