It really takes certain kind of people to store a cardboard box in a way that it looks like almost mint after 50 years of time.
I've been reading threads like this about Sui three-digit series and how good sound they put out. As I am in the capacitor coupled -camp I couldn't walk out from an opportunity to get one of these into my collection as one came my way.
As soon as the Sui arrived to the doorstep I also had to create shopping list on Digikey to recap the unit. It's amazing how fast Digikey can deliver an order to Europe from the States. Just 3 days and I had the new parts with me.
Now the AU-555A is completely recapped, both rectifiers replaced and 2 watt resistors replaced the originals in the power supply. All pots deoxited as well.
It's my fourth day listening to this, new caps are still burning in. Sounds very nice indeed! RIAA sounded very sweet, one of the best I've heard.
At least this unit has some transformer hum, buzz, which is notable at very low volume at late evening.
Probably I have to live with it?
I have Sui 1000x and 5000 as well from the same perioid, which don't have so notable hum.
Here are few photos.
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Speaker 'A' terminals had these plugs inserted in them.
I wonder what these are for, never seen these before?
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So, one of these great units rescued again from becoming land fill too soon.