I spotted a SB-404 (in fact SB-404S) in the middle of a huge pile of various vintage gear offered for sale 'for parts'. I contacted the seller and succeeded in buying only the SB-404 amp. The original knobs were taken and replaced by unknown brand knobs, and the levers of the two toggle switches were gone/broken as well. Althought the wooden case was badly damaged as well, the faceplate is very mint, and therefore decided to do whatever it takes to have this unit restored to new.
As such, I already purchased a Toshiba ST-500 tuner and SA-400 receiver, only to demolish them for the necessary knobs and levers, plus that the SA-400 receiver has the same 'Toshiba TH-9015P Power Pack ICs' in the output stage. The latter IC being NOT a luxury to have 2 spare in stock. Another bonus was the wooden case of the ST-500 tuner, which is exactly the same as for the SB-404, and which is absolutely mint. So now the outside is fully mint.
After a long search, even found the service manual for the SB-404, which is a real pain to find !
Hence, I have all the parts now to revive the SB-404 into new and original condition. Just a matter of getting started with it (hopefully this year). I intend to do a full rebuild threat here on QQ with lots of pics.
