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RCA 9289 tube amplifiers

The RCA 9289D was the final version of this great 200W amplifier.  It features four 6550 in the output stage and an interesting power supply with OD3 regulators.  My father designed the final version of this amp for RCA and we have several available.  I'm testing the water to see if there's still a market for this excellent amp before I start recapping them, or whether folks would prefer them bone stock.

cdietze
jond's avatar
jond
5,807 posts
 

Interesting can you post some photos?

jasonbourne52's avatar
jasonbourne52
2,863 posts
 

Is this a mono amp? I'm guessing it must be fifty/sixty years old! Certainly new caps throughout would be a prudent upgrade!

elliottbnewcombjr
5,378 posts
 

Without a doubt check them, replace needed 'out of spec' resistors, caps, ...

I would NOT go for 'upgraded, tighter, better' resistors, caps, just stay within original performasnce specs as shown of the OEM parts list.

A particular owner could chose to 'upgrade' for themselves, but you don't want to change the magic sound the original 'in-spec' parts provided.

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