Help me find a smooth solid-state amp?

The question you pose isn't as easy to solve as just buying a new amp. The other guys have already addressed several issues. Part of your difficulty is the fact that you have a pair of monitors that don't go very deep, and this relative lack of deep bass tends to make the upper-mids and highs stand out. Adding a subwoofer may make things seem smoother, but infact will simply be balancing the overall frequency response of the system. I have owned several Adcom amps, currently have a Bryston 4B-ST, and have extensively auditioned a number of other high quality solid-state amps. The Bryston is not, infact, bright. It is exceptionally revealing and neutral, and will point out deficiencies or problems in other areas of the system. There are several things I suggest you try: audition a tube amp in your system; trying some acoustic room treatment to see if that takes the edge off the brightness; add a subwoofer to get a wider freqency response in your system; get a pre-amp that has controls that will let you do some tonal adjustments. If all else fails, you might try a good 30-band parametric equalizer in your system.

Aloia Amps with the inductive power supply. Smooth and powerful. THe best I have heard

MCCORMACK DNA 0.5 DELUXE OR PERHAPS THE MCCORMACK DNA 0.5 DELUXE THEN AGIAN YOU COULD TRY THE MCCORMACK DNA 0.5 DELUXE

Lots of responses here. It looks like it's a story of been there, done that. Start with the source. Pioneer? I guess they've made bright sounding stuff since the '60's. Try another source. Try different interconnects/speaker wires. Do you really want to design your system around the Pioneer DVD player and the Soliloquy speakers, and throw out the amp/preamp? If so, bid on the CJ integrated tube amp. Consider calling Musical Concepts, they've been modifying Adcom gear since Dynaco went out of business. Good luck!

If that front end is a Pioneer DV525 - then the DAC in it is bright and mechanical/electronic sounding. Warming it up will not fix the fact that the front end has sucked natural harmonic balance out of the music. A decent DAC or another CD player is where you are best to start - and then look at the preamp.