Time to upgrade the pre-amp.

First of all, I misread the SP-11 gain. looks like 29db if I am reading this right: https://www.arcdb.ws/model/SP11.

@markusthenaimnut thanks for the comment re "experienced audiophile" but I am afraid you are mistaken. Perhaps "old audiophile"... that said I am attracted to P2P vs printed boards. Instinctively I think the former is better. My Icon Audio phono stage also fits that them. With ARC, i must admit that I appreciate the polished presentation, the copious documentation and the ready resale market.  That said I will be taking a detailed look at Supratek. @verdantaudio, is the matching pre-amp for the PX-25 the Conductor Simply? I think I saw it had no remote and stopped looking, but I will take a deeper dive.

Conductor Simply 2 and it comes with a remote.  I don’t offer the non-remote version as no one really wants it.  Mine is literally in-transit from UK.  

With ARC, i must admit that I appreciate the polished presentation, the copious documentation and the ready resale market.

Yeah, but does it offer the sound qualities you’re looking for?  You already have an ARC pre and yet are searching for a fuller midrange and more musicality, so you’re going to replace your ARC with, uh, another ARC???  For these reasons I recommended VAC above and many others have also recommended preamps that will bring you in the direction you’re looking to go.  Or just keep doing the same thing and hope for a different result — know what that is?

Having just gone through the "preamp shuffle," Get an ARC REF6. They can be had on the used market of about $7K and it is a fabulous pre, IMHO, a significant step better than the new LS28SE, both of which I had in my system. In fact, I thought that the LS28SE was just barely better than going direct from my MSB DAC to my Pass Labs 250.8 amp. I also experimented with a VAC Renaissance Mk V, primarily because it had a built in phon stage, and the VAC was also good, and slightly better than going DAC direct, but not in the same league as the ARC REF6, again, in my system. Owners of the Allnic 7000 rave about those as well, and you can get one for around the price of the ARC REF6. I have no experience with that pre but talking to owners, and someone from The Music Room who had listened to one, that was on my short list, but resale on them is very slow if I ever wanted to sell AND there is no volume display. For me, I like a visual volume display too, so I am very pleased with my REF6 over everything else.  Note that I replaced the stock ARC PC which has a 20 amp termination, with a Shunyata Research Alpha NR V1 PC and the difference was so startling that I went all Shunyata!

@soix a lot of logic in that post! Not sure I can afford VAC... But they look awesome.