I'm in the market for a power amp to go with a monarchy Model 9 tube preamp

Quote Originally Posted by specs from website
6 inputs

2 outputs (one main out; one tape out)

Industrial power supply: 250V fully regulated High voltage

Dual gang audiophile-grade potnetialmeter for volume control

2 x 6SN7 tubes
Single Gain Stage for Maximum sonic purity
(One section of 6SN7 used as gain, the other section used as output buffer)

Gain : 14 dB

Distortion: under 0.05 %

Frequency Response: 20Hz to 20KHz +/- 0.25 dB
speakers are in transition from infinity RS1s (they worked well enough for my old NAD 302) to some higher end speakers my brother is getting for me. name escapes me at the moment but they are rated to 100 watts. I've seen them run higher without any issues though. Also have a cambrige soundworks basscube 8s for my sub. I listen to a wide variety of music. Generally I listen at moderate volumes. Any suggestions on what I should look for in a power amp?