The MFOS Sound Lab Mini-Synth PLUS (SMD version) is an Eurorack adaptation of Ray Wilson’s classic Sound Lab Mini-Synth PLUS, itself a substantially enhanced evolution of the original Sound Lab Mini-Synth (SLMS). This conversion is part of the official effort by SynthCube to bring the Music From Outer Space (MFOS) analog synthesizer designs into the Eurorack modular format.
My Tindie shop is currently on pause
In April 2026, Tindie was sold by Siemens/Supplyframe to a new owner — EETree LLC — whose identity remained anonymous for weeks. The transition was poorly handled: the platform went offline for nearly two weeks with no prior warning, and sellers were left unable to view or fulfill orders, or withdraw their funds. The site is back online, but seller payments are still not working, and many questions remain unanswered. I don’t feel comfortable taking orders there until the situation is resolved.
In the meantime, my shop at shop.davidhaillant.com is open if you’d like to order something.
I’ll reopen my Tindie shop once I’m confident it’s reliable again. Thank you for your understanding.
Simple VCO – Update 1.1
The Simple VCO belongs to the same series as the Simple LFO.
It is a very stripped-down version of the Formant VCO, modified and adapted to the Eurorack format.
The Simple VCO is 1V/Oct capable. In order to reduce the number of parts, only one waveform output is available.
It is a very simple module, easy to build, understand, and maintain, yet fun to play and musically accurate.
Continue reading Simple VCO – Update 1.1
Piezo
Piezo is a contact microphone preamplifier and CV generator with an integrated envelope follower, gate output, and user-controllable attack and delay parameters. Its front panel features a dedicated tactile zone designed to be scratched, struck, or pressed, making the module itself a playable instrument.
AttenuVerter – Version 1.0
The AttenuVerter is a dual-channel CV processor. It can attenuate, invert, and offset two independent control voltages.
Continue reading AttenuVerter – Version 1.0
Simple AR Gen
Simple AR Gen is an old Attack-Release (or Attack-Decay) Eurorack module project.
Continue reading Simple AR Gen
Input – Instrument Pre-Amp
Input is a Eurorack module designed for pre‑amplifying audio signals from instruments such as guitars, microphones, and more.
Continue reading Input – Instrument Pre-Amp
3 x Passive Attenuator
The 3 x Passive Attenuator is an older project that offers, as its name implies, three independent passive attenuators. This very simple module is extremely useful when you need to reduce the amplitude of a signal that would be too strong for another module, or when sending a Eurorack-level voltage to a more sensitive, non-Eurorack audio equipment.
Continue reading 3 x Passive Attenuator
Simple VCF
The Simple VCF was an early attempt to replicate the low-pass/high-pass filter from the original MFOS Sound Lab Mini-Synth.
Continue reading Simple VCF
Eurorack Power Supply 1000
The Eurorack Switched-Mode Power Supply 1000, or “Euro SMPS 1000” is a high-quality, efficient, and affordable power supply for your Eurorack system.