hi there thinking about getting a psx-r for my aca7 pre did you add the PSX-R's all at the same time? do they make a massive difference and do they work better on the pre or the powers?
Originally 2 PSX-R's were used to monobloc the old Cyrus Power amp many many years ago. Then another was added to the old Pre amp , which did sound better when PSX'd.
Then when i upgraded i just kept the 3 of them. To be honest i've never tried listening without them since then as I like the sound the way it is. Probably jusy laziness though.