Synth Firmware Shop

Re-engineered firmware for certain vintage synths, developed by Bob Grieb ( – sold with permission and including a license fee to the author for each and every chip. (So you are supporting a brilliant engineer and his love for vintage sound machinery.)

Firmware Upgrades for:

See our terms of business und refund policy. The shop is an enterprise of Ingenieurbüro Günther Eggers, see the contact page.