TherapSid MKII

499.00 ex VAT

2 in stock



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.

The unit can be configured to provide the correct voltages and the necessary filter capacitors for both generations are included.


  • CV/Gate control
  • 3 Oscillators, 4 waveforms per osc.
  • Multimode Filter (LP BP HP LP+HP)
  • Compatible with all SIDS
  • 3x CV LFO override
  • MIDI output for preset dumping and CCs on all knobs and buttons
  • Paraphonic 3 voice mode
  • LFO assignable to ADSR envelope 3
  • Preset reset (uses preset as template)
  • Preset randomizer
  • Arpeggiator with 4 auto modes and manual scrubbing
  • Multi-sid (4 stereo fat modes) You can mismatch different SID types

Order includes 2 Midi cables, power supply, one SID chip and free world-wide shipping.

Got SID ?

If you already own a SID chip, please use the discount code “chip” for a 25euro discount

We’d be more than happy to test and install any SID chips that you can source. Just drop us an email.

Note about 6581 chips: They do have a fair amount of distortion especially at low cutoff values, this is a sound I personally love but some might prefer the more modern 6582/8550 version of the SID which is brighter (but more background noise) . I currently don’t have 6582/8550 in stock. Feel free to use the “chip” discount if you prefer to source your own. I’d be happy to install and test it for you prior to shipping.

I want the second SID chip!

We have a very limited supply of SIDs and can only supply one (while stocks last).
Don’t feel like you only have half a therapSid without the second chip. It is fully functional with one

You can mix and match SID types and the removable panel makes it easy to set up.


25cm x 15cm x5cm


Firmware updates:

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

Earlier updates

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

User manual

Overview & demos video (using a pair of 6581)


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

Additional information

Weight 1.2 kg
Dimensions 25 x 15 x 5 cm