You're watching a KIT consisting of two EPROMs with the last OS for the Ensoniq ESQ-1 (V3.5). I can provide you the original or the modded version with "hidden waves".

You have to remove the keybed to replace the EPROMS. It´s a easy job if you can use a screw driver: remove the 4 top screws, remove the bottom screws that hold the keybed and replace the EPROMS. I will provide precise instructions if you need.

I have a huge collection of synthesizers, I am always available to help in stuff related to the ones I own. From Ensoniq I only have the ESQ1 and I can provide the battery, pots, the CEM 3379, the SSM2300 and new displays. Check my other items - decent prices for top products sent immediately, well packed and express tracked mail.

These are NEW products, not new old stock. I have sliding pots for most vintage gear, including most Korg, Yamaha and Kurzweil. Some rotary for older Moog (Micromoog) and Transcendent 2000. Also some switches and some SSM and Curtis (CEM) chips. I will be selling all these in the next few weeks. Contact if you are looking for something. I repair (and collect) synthesizers since 1992.

I will send worldwide (tracked) for free. I'll ship same day or next, depending on payment hour.