Sequenced analog synth

Model Number: ADXMK1
Release Date: March 2008

Analog monosynth with Vactrol-based Hard Sync and Pulse- Width Modulation (PWM) and variable Gating effect.

One-off build incorporating an oscillator based on the legendary 555-timer, a number of unique in-house modifications, the beautiful, slewed response of vactrols and a dynamic Gating effect.

Homebrew PCBs and hand-wired internals gave this synth a raw, rich sound that went well beyond the simplicity of its design.

Elements of this implementation were refined for the MK2s and then appeared in the core design for the 2009 release of Synthex.


exc. VAT
Plus applicable shipping & tax
Manual not available

Manual & Specs

    Synthesizers / ADXMK1

    1) Buy a suitable USB to FTDI (TTL-232R-5V) cable directly or from a 3rd party supplier:

    USB to FTDI (TTL-232R-5V) cable


    Also available from:

    Adafruit (US) Digikey (UK) Farnell (UK) Sparkfun (US)

    2) Follow the instructions in the manual for downloading and upgrading:


    USB to FTDI Cable Driver:(Mac) (Win) Easy uploader Firmware Installer:(Mac) (Win)