Our new <3<3MMVOICE voice cards for Memorymoog and Memorymoog Plus are a drop-in modern recreation of the original. Our design supports both vintage CEM3340 oscillators and modern CEM3340 Rev-G oscillator chips, along with component upgrades ensuring that you can keep your classic vintage Memorymoog synth alive and well for decades to come.

SAVE WHEN YOU BUY A SET: When you buy the set of 6(see other listings for complete set), you're paying for 5 and getting the 6th voice for free. We're offering two price points for those of you intent on swapping in your own vintage chips. Option 1(this listing): Purchase with the voices set and fully stuffed (populated) with Rev-G CEM3340 oscillators, AS3360 VCAs, and AS3080 OTAs. Option 2(see other listing): Purchase without any ICs stuffed and set to operate with vintage CEM33040 chips.

Why do you need new voices? Original Curtis chips are getting harder to find and more expensive. The Alpha AS3340 chips don’t have sufficient tuning range to calibrate properly. Even the Curtis Rev-G chips have slight differences from the originals, which render the Osc2 sync function and pulse-width inoperable. We solved these problems by designing our voices to be “set” by adding or removing a few SMD resistors so that they work with new or vintage chips. Aside from the oscillators, longtime Memorymoog owners and techs know of several common failure points in the original voices, which can result in everything from tuning instability to a completely dead voice.

Comes with a two-year warranty.

Use our instructions to install the <3<3MMVOICE on our website doubleheartaudio, or share them with your synth technician.