Synthrotek brand Patch Cable Holders

September 13th, 2016 No comments
       Synthrotek’s Cable Holder 7  and Cable Holder 27  are designed intentionally for the Eurorack modular market.  The “7” is designed to fit on your wall, side of case, or ANYWHERE you need a compact cable holder.  The “27” is uniquely designed with a 5/8″ middle hole intended to fit onto mic stands.  Both are made of VERY sturdy American Steel and have a rugged textured black powdercoat finish.
Synthrotek Patch Cable Holder 27

Synthrotek Patch Cable Holder 27

Synthrotek Patch Cable Holder 7

Synthrotek Patch Cable Holder 7


Synthrotek ADSR 4HP Eurorack Envelope Generator

August 26th, 2016 No comments
Synthrotek ADSR Eurorack Envelope Generator

Synthrotek ADSR Eurorack Envelope Generator


The Synthrotek ADSR is a small and simple envelope generator with some very useful features.  CV is additive for overall length of ADR stages in ADSR mode and add even more length to just the Release stage by adding CV into the Release jack. AR mode allows for snappy to long dynamic rhythm lengths. Very short minimum lengths, self cycling and a maximum output of 5 volts makes this tiny (4HP) envelope a very feature packed and versatile module.


  • Stage Lengths:
    • Attack: 4ms-2 seconds (up to ~ 4 seconds with CV)
    • Decay: 4ms-2 seconds (up to ~ 4 seconds with CV)
    • Sustain (based on gate length)Release 4ms-2 seconds (up to ~ 4 seconds with CV)
  • ADSR Timing Sheet
  • LED indication for each section
  • CV over ADR
  • CV over Release
  • ADSR or AR mode
  • Exponential or Linear Curves
  • Self-cycling
  • 4HP wide
  • Depth: 40mm
  • Current Draw: +12: 30mA, -12: n/a, +5: n/a



Classic Syntar T-shirt and Hoodie Designs

August 25th, 2016 No comments
Classic Syntar Design - The world's first keytar, invented by George Mattson

Classic Syntar Design – The world’s first keytar, invented by George Mattson

No classic synth t-shirt collection is complete without the original SYNTAR marketing material graphics which were HAND DRAWN by George Mattson himself!!!.  This shirt also comes as a hoodie.  Limited edition.  Click on the image above to check out the garment selection on the Synthrotek store.



June 8th, 2016 No comments




The MST MIDI to CV Expander module is a tiny but extremely powerful expansion module for the MST MIDI to CV Converter. The Expander includes an arpeggiator and allows you to have additional CV, gate, velocity, modulation and aftertouch outputs on a separate MIDI channel. You can also set it to the same MIDI channel as the Converter and use one of the three note priority selections, which will allow you to do duophony/pseudo-polyphony. You can daisy-chain Expanders together to add even more channels.
The Expander really shines when it is used with a DAW. Multiple Expanders can be set to different MIDI channels in any sequencer (like Ableton for example), making live performance with your Eurorack simple.

1U UniBuffer Released!

May 2nd, 2016 No comments

Synthrotek 1U UniBuffer

Recently released is our new, 1U UniBuffer module.

The 1U UniBuffer combines a buff mult and a unity gain mixer into a 1U module. It’s great for small cases where you want both functions available (like the Power Lunch).

The Buffered Multiple is a PRECISION buffered mult that is perfect for for 1V/O CV sources. The 1U Unity Gain Mixer adds input signals together and combines them for a summed output.

  • Buffered Mult:
    • 1 input, 4 outputs
    • Precise voltage output for 1V/O sources
  • Unity Gain Mixer:
    • 4 inputs, 1 output
    • Mixes AC signals (audio) and/or DC signals (gates, triggers, CV)
    • Input signal is not boosted or cut
    • Sum of inputs is the total output

Click here to purchase the 1U UniBuffer