Tascam 234 control pcb 5210119-00 There are three of these

There are three of these on the  85-16 1 inch tape recorder

Dual   375N 5KAC 6 LEGS R164/264 ETC 8240013000

An unusual spare but i have been asked for this where people want to make another head assembly

The dual one is pretty common on all of the later A-series but the single is not as far as I can see and is rare as others in this four track series often have a chrome top or smaller size

Seen these on most of these old machines

Tascam 234 control pcb 5210119-00 There are three of theseThe Tascam 234 was a rack mounted unit, and is becoming popular again Its basically a cassette reel to reel, still very popular and sell for a lot now and I see that price is rising. This is the control pcb, I noted it has a 100khz bias module