Preamp advice

Well, pretty much any preamp. What is your price range?

Without any information I would recommend the Audio Research LS28SE as an outstanding sounding reasonably priced preamp. Detailed, perfectly balanced, musical / magical sounding preamp with outstanding build quality, excellent imaging.

Audio research and Backert are my favorite.Iam not sure if you have the budget to acquire them and if they will match your system.

@tubesound247 Your amp has balanced inputs so I would consider a balanced preamp as the amp itself will work better simply on that account.

If you consider going that direction, there is a balanced line standard known as AES48. This standard helps eliminate colorations due to the interconnect cable and has been in place since the inception of balanced line. A lot of balanced equipment in high end audio does not support the standard. If the standard is not supported by the equipment, two important benefits of balanced line operation are not realized: the first I explained, the second is immunity to ground loops.