I used the Rotel amp and pre/pro with my JM Labs Electra 926's. I too thought, on some poorly recorded rock CD's, that the sound was a little bright. I then moved to an Audio Aero Prima integrated amp. The brightness went away and a body came to the sound that was not there before.
The JM Labs are fairly easy to run and really love tubes.
The Audio Aero integrated is a hybrid amp. It has only one tube in the preamp section. It also has more power (40 watts) than I need and I listen to rock. The newer ones have fifty watts. At the used prices, that they are going for, they are a steal. They are also easy to sell if you don't like it. I love mine.
The JM Labs are fairly easy to run and really love tubes.
The Audio Aero integrated is a hybrid amp. It has only one tube in the preamp section. It also has more power (40 watts) than I need and I listen to rock. The newer ones have fifty watts. At the used prices, that they are going for, they are a steal. They are also easy to sell if you don't like it. I love mine.