I recently acquired a second-hand 565 pre-amp for my second system, but have been using it in my main system lately. It's a very good preamp, and the one I have has plenty of depth. Neutral, inoffensive, dynamics are fine. Frankly, I don't see much of an advantage to spending more money on a preamp. I was using an Audible Illusions M3a, with recently renewed tubes, and I don't miss it at all.
If interconnects make any difference at all, the Ruby might be a little closed in, muffled, compared to more expensive AQ cables or the very reasonably priced DH Labs budget interconnect. If the Acurus is bright or forward, the Ruby might do well between the 565 and the amp.
If interconnects make any difference at all, the Ruby might be a little closed in, muffled, compared to more expensive AQ cables or the very reasonably priced DH Labs budget interconnect. If the Acurus is bright or forward, the Ruby might do well between the 565 and the amp.