Tamura Audio Microphone Transformer 60466310 tascam 38 The Model 80 uses a

The Model 80 uses a dual plastic pulley the A8 and probably the whole A series uses a metal single pulley

my guess is at some stage a studio has upgraded all the relays and brought each channel up to spec

end in 00 10 20 etc so this maybe a later modified pcb

Pcb from the Tascam 34 -B maybe common in others

its well worth doing if you are going to use the machine often

Tamura Audio Microphone Transformer 60466310 tascam 38 The Model 80 uses aVery good quality Microphone transformers high lo made by Tamura in Japan and used widely in the audio industry . these have the Teac part numbers and were used for many years 2. 7k in 33 ohms out approx.