Any recommendation on wether to get the ref 6 to 6 SE upgrade for $3k or trade in the old ref 6 and get a new 6SE for $5500?
Audio Research Ref 10 vs 40th Anniversary preamp
I was wondering what the difference in the sound between the Ref 10 and the 40th ? Not much wrote about that. I btw have the Ref 6 but never heard the 10 or the 40th.