A Triplanar is about as good as they get. I'd agree with artemus_5 and start there and I believe that would give you some important info on the headroom (or lack thereof) your phono preamp has.
You might also consider having your Denon modded. Andy Kim does great work in that department.
Also, GET BETTER RECORDS!
You might also consider having your Denon modded. Andy Kim does great work in that department.
Also, GET BETTER RECORDS!