Originally Posted by btbed
Thank you for the advice sir. This where I came to this conclusion.. using all channels on Marantz sr7013 i feel there could be more and I believe limiting transients in a way with no distortion.... What amp are you using these days in your dedicated room? I was looking at a Emotiva A5175 ... and then PSA speakers.. 😏
In the theater I'm using Acurus amps, two 200w x five channels, a 200w x 3, and a 200 x 2. That's a function of me having several of those amps when staring down the barrel of needing 15 channels of amplification and wanting no compromise power on all channels. Yes, this means I have 15 x 200W @ 8 ohms.
My boss has Emotiva XPA-5 amps and they sound really good in the theater. I've never listened to the 5175.
I have auditioned all sorts of exotic amplifiers from bryston, plineus, forrest audio, krell, mcintosh, theta, b&k, hafler, paradygm, carver, NAD, Pass. mark levinson, parasound, ATI, Boulder, MBL...running out of typing stamina here. I have listened to similarly diverse speakers on those amplifiers.
I would look to amps in the same price universe as your speakers. Looking at the 5175, it's an old school A/B design (a good thing!), with decent capacitors and a nice large toroidal transformer. I would image it would go quite nicely with your PSA speakers. Again, I have no experience with that model but it looks good on paper. Perhaps there is an Emotiva thread running around somewhere? In amps I would go more for a solid midrange performer and spend the real dough on the speakers.
I would also get a decent set of interconnects. You're looking for oxygen free copper (not copper plated steel) and decent quality RCA connectors. Be wary of Amazon. If you get cheap interconnects from Amazon, I would order an extra pair and plan on splitting them open to verify the construction. Monoprice monolith cables are fine, if you want to spend more, that's fine as well but after you get a solid signal path, no noise in the cable, and excellent surface conductivity not much (IMHO) matters in RCA land. If you move up to balanced you can run much lesser cables as the balanced signal path is designed to reject noise and can overcome the inadequacies of lesser cables. Someone will call BS on me but that person probably doesn't have an electronics background.
About as far as I think it's worth spending on amps is really the $2kish range... you start moving out of physics and science into the world of emotions and feelings. There is probably some science in there somewhere but at that point I would hope you are spending $5-10K on speakers and $10K on a dedicated room to be able to hear any real improvement in switching amps out.
Good luck, enjoy the ride.