Similar Gear from UK Sellers

Price Drop
Future Retro FR-777 TB-303
Used – Excellent
Stourport On Severn, United Kingdom
Originally £1,400, now £999 (29% price drop)
London, United Kingdom
London, United Kingdom
Originally £1,000, now £600 (40% price drop)
Edinburgh, United Kingdom
London, United Kingdom
Abergavenny, United Kingdom
Newcastle Upon Tyne, United Kingdom
Hull, United Kingdom
Originally £1,400, now £1,300 (8% price drop)
Price Drop
Korg 700 1970s
Used – Very Good
London, United Kingdom
Originally £1,500, now £1,000 (34% price drop)

As Dinsync states, "it's not a clone, it's a replica" (hence the RE in RE-303).

It's a 1:1 reproduction of the original TB-303 pcbs, all the components are the same as the exception of:

- the BA662 OTA, used in the amplifier section of the synth. It has been replaced by a clone that has no notable sound difference, you can however get rid of the clicky enveloppe some 303s has with a trimmer, or leave it like this.

- the microcontroller and firmware that goes with it. It's not possible to directly "copy" the original firmware, so Sonic Potions (also known for the LXR, a DIY digital drummachine) reversed engineered the original uC to make a new one and add some more features like:

 - Full MIDI IO
 - Live recording over the internal keyboard and MIDI up to 8 bars
 - Realtime tweaking of accent, slide and transpose
 - Random pattern generator (that can be scaled to minor/major)
 - Chaselight
 - All functions available while the sequencer is running
 - Data storage on a modern FRAM memory

This unit has been built, calibrated and tested in July 2017 and has been waiting in a box for it's customer who finally never bought it, so it only has been used for test actually. I've upgraded the microcontroller with the latest firmware (v0.92a), it can easily be done by using MIDI sysex.

The synth is housed in an aluminium case made by Substyler. It comes with a BOSS PSA230S power supply as recommanded by DinSync, so it's a 220V euro plug. If you need a 110V PSU let me know, I'll take this one off the total price and will link you to a 110V equivalent (PSA120S should work). The power supply is really important and needs to be well regulated.

As a professional, the total price include VAT. So if you're outside Europe or a EU professional with VAT number, send me a message and I will take it off the total price.

Shipping price is for insured shipping.


Listed6 years ago
ConditionMint (Used)
Mint items are in essentially new original condition but have been opened or played.Learn more
  • RE-303
  • Aluminum
  • 2017
Made in
  • France


Lyon, France
Joined Reverb:2018

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Carbon-Offset Shipping

Your purchases also help protect forests, including trees traditionally used to make instruments.

Oops, looks like you forgot something. Please check the fields highlighted in red.