Phono preamp suggestions

Not for under $600. You might find a used ARC PH3-SE for a little more that would fit the bill.

But my preferred approach has always been a little different. Rather than shop for a component that fits my budget I try and shop for the components that are serious out-performers in terms of value. Then if they fall in my budget I buy them. If they don't then I put that money to use elsewhere. Done repeatedly over the years it results in a system that punches far beyond its class.

Like right now, $600, hard to say how much more it will get you in a phono stage. But it would get you a Blue Quantum Fuse and a set of HFTs and/or ECTs. Unless you already have done those its hard to see how any phono stage is going to be a more dramatic improvement.

I like Sutherland. The least expensive is $900 new. I don't know about "dramatically" and it can be subjective but it should be significantly better. Should match well with Pass too. Good cables and power cord are important, as always.

I agree with the above; not for under $600.

With that PA and Pre why would you limit yourself to such an inexpensive phono pre?  I mean you have well over $15K at retail in the amp/pre combo.  What TT/arm combo are you using?

Ifi Audio Iphono 2 is actually dam good for $500ish.