I’ve got this pair of Altec 9476A from ebay without amplifier boards and metal covers.

But other components are valuable to rebuild.

See link below for complete operating instruction.


This is 8 watt monitor amplifier @ 4 ohm unbalanced or 150/600 ohm balanced load.

Use external module power supply (Altec 9550A) for two 9476A mounting on the tray.

Original schematic use 2N3055 power transistors operate in push-pull

and coupling with a huge value capacitor (5,000 uF) for 4 ohm load.

Really worth for money are input and output transformers,

Peerless 4814 (10k : 60k) input transformer

and Peerless 16688 (4 : 150/600) output transformer.

Output transformer can reverse to 600 : 4 ohm, easier to find coupling capacitor.

Pair of Altec 9476A amplifiers.

Coupling capacitor and filter capacitor are same value. 😉

Missing amplifier board at the slot.

RCA 2SK3027 replace 2N3055 ?

Bottom side of amplifier.

Peerless 4814 input transformer with complete audio frequency response.

Peerless 16688 output transformer, larger than spec !

I think build tube amplifier with these transformers in original casing will more interesting
than find an amplifier board or make a new solid state amplifier.