This type of thick film hybrid block was in very common use back in the 1980's amplifiers, particularly those from Japan. A nice neat compact amplifier package which suited most users ears although the "purists" of the day still preferred to listen to their discrete transistor based (or valve) amplifiers.
I am offering this device as a "spare part - replacement" as they can be hard to find these days and although you could use this as a basis of building a custom designed amplifier, I think it is probably unlikely that someone would consider this option.
SANYO - Two Channel Audio Amplifier Block
Made In Japan
STK 4152II
Technology: Thick Film Hybrid 'block'
Typically provides up to 30W RMS per channel into an 8 Ohm load(s) with 100mV input drive
THD @ 30W output, claimed to be around 0.4%
Typically uses a split supply around 27.5V on each rail (+/-)
Datasheets for these hybrid chips are easily obtainable online
USED but extracted from fully functioning audio equipment (the equipment had other issues such as a motorised volume control that I could not find a replacement for)
COSMETIC CONDITION:
Clean - meaning that the previous Silicon grease has all been removed completely.
Legs are in reasonable shape and have not been substantially shortened
Now packed (on a stiff cardboard backing to protect the legs) into a sealed clear plastic packet.
