I’m looking for a Drip opto 6 pcb. Seems like they’re out of stock at Drip and not sure if it will be available anytime soon. I know the opto 7 is out there but a stereo unit is a bit pricey...
The opto 7 PCB is actually 2 mono pcbs. It's designed to be (optionally) snapped in half. You could potentially buy the Opto 7 and sell the half you don't use.