TherapSid MKII

474.00 excl. VAT

Out of stock

SKU: TSID Category:


TherapSid will return soon, feel free to reach out if you wish to be contacted when it’s available again! Thanks


SID under full control

Named after a vicious dinosaur, its sound is no less aggressive.
TherapSid has evolved to create roaring noises that will cut through your mix like razor-sharp claws through a mammoth steak.

So why do you need another synth, since they already take 90% of the space in your room and your significant other keeps complaining about it?Well, what sets TherapSid apart from other SID based synths is its focus on control. Instead of getting confused by lcds and damaging your eyesight trying to read tiny sub menu fonts, this instrument features no less than 35 knobs and 33 buttons to give you full power over your sound.

TherapSid is lovingly handcrafted in the south of France and packed with enough features to keep you busy until the next ice age. You can assign LFOs to knobs with one push of a button, you can also override the LFOs with analog control voltages. The arpeggiator is a lot of fun with its unique scrub feature. 100 Presets are included to get you started.

TherapSid is compatible with all variations of the SID chip including 6581, 8550 (6582) & Swinsid and it is simple to install your own.


  • CV/Gate control
  • 3 Oscillators, 4 waveforms per osc.
  • LFOs sync to MIDI clock
  • Multimode analog Filter (LP BP HP LP+HP)
  • Filter can be assigned to each voice individually
  • Compatible with all SIDS (6581,6582/8580,swinSid)
  • 3x CV inputs for LFO override
  • MIDI output for preset dumping, arpegiator, and CCs on all knobs and buttons
  • Paraphonic 3 voice mode
  • Multi timbrall: the 3 voices can be played on separate MIDI channels
  • LFO assignable to ADSR envelope 3
  • Preset reset (uses preset#1 as template)
  • Preset randomizer
  • Arpeggiator with 4 auto modes and manual scrubbing
  • Multi-sid (4 stereo fat modes) You can mismatch different SID types
  • VST Editor for integration with your DAW
  • Dimensions: 25cm x 15cm x5cm

Order includes 2 Midi cables (MIDI Type A), 15V DC center positive power supply,  all items are hand-assembled to order and can take up to 20 days to ship.

Shipping method is DHL express (2-4 business days in most countries.)

SID not included!

Until further notice therapSids no longer include a SID chip. We have ran out!

If you already have a SID chip, you are welcome to send send it to us and we’ll test and install it for you. The plate is removed using a torx T8 (or 2mm) bit.






Firmware updates:

V1.9 (release date Nov 4 2019): 
-Fixed a bug causing long MIDI delay if MIDI is received during startup
-Optimised for VST editor
-LFO Midi send can be activated/deactivated (via CC or editor)
-ARP Midi send can be activated/deactivated (via CC or editor)

Earlier updates

V1.8 (release date May 16 2019): 
V1.8B (alternate version with LFO/ARP Midi send disabled)
-Fixed a bug causing filter resonance to become weak when oscillators are muted that are connected to filter (8580 only)
-Glide in Paraphonic mode
-Glide is now legato (not applied to the first key)
-Voice 3 is twice as sensitive to pitch modulation (more extreme ring mods)
-Aftertouch controls lfo2 depth
– Fixed bug that broke random preset generator in 1.6
-Smoother PW modulation via linear interpolation

V1.6 (release date Nov 6 2018): 
-Fixed a bug causing some devices to have limited Cutoff range with OS1.5
-Extended lower note range


V1.5 (release date April 25th 2018): 
-MIDI Program Change Implemented (1-99)
-LFO Env times adjusted to match SID internal envelope times
-LFO MIDI syncing improved


V1.4 (release date January 9 2018): 
-Pitch bend(+/- 2 semitone range)
-Individual voice playing (ONLY when MIDI input is set to Channel 1.)
Ch2=OSC1 Ch3=OSC2 Ch4=OSC3
-LFOs sync to MIDI clock
-Filter enabled or disabled per voice:
hold filter mode and press a waveform to enable/disable the filter
-MIDI CC59 modulates cutoff  (  CC32 is not supported by Ableton Live)
-Fixed Voice 1 Attack bug


V1.3 (release date August 22 2017): 
-Fixed memory leak causing occasional freezing between presets
-FatMode saved per preset
-Quieter filter mode change

V1.2 (release date August 14 2017): 
Improved preset scrolling (avoids occasional preset skipping)
Potentiometer smoothing to prevent occasional knob jitter

V1.1 (release date June 21 2017): 
improved arpeggiator behaviour
fixes occasional crashing during preset change whist MIDI is being sent

Vst Editor

download R1 for mac

download R1 for windows


Factory presets V.1 


User manual

Overview & demos video (using a pair of 6581)


Crazy8 +TherapSid MKII (using a pair of 8580) + Modules

Additional information

Weight 1 kg
Dimensions 32 × 23 × 12 cm