Check out the post on his forum. I think all replica 1 owners should get a cassette interface for their units. Using an ACI is pretty essential to a faithful Apple 1 experience. Back in the the old days, it was…
Owners of original Apple 1′s or clones like my Mimeo or the Obtronix understand that without a Cassette interface, an Apple 1 Computer is nearly useless.
Cassette interface technology can be challenging. Note that Vince’s unit is most likely to incorporate several design features that I first documented either on my web site, or on Applefritter.
If you can’t wait for Vince to make an ACI board, I have authentic reproducion ACI kits in stock and ready to ship for $75. Drop me an email at email@example.com