Interesting comments by the 'amp' first camp, but unfortunately they are completely mistaken. As was said earlier, the speaker and the manner in which in interacts or integrates into the acoustic space is first and foremost. If that interface is flawed, then there is NO AMP on the planet that will correct the situation...
Analyze your room, it's dimensions, it's construction, and review the surface types of the floors, walls, and ceiling. Then, try a variety of speaker types, keeping in mind that you will not fill a huge room with sound using a mini-monitor, nor can your ears handle a monster box speaker in a small acoustic space...get the right speaker for your room taking into account the 'sound' you like...then, and only then, you can find an amp that works well. The speaker choice will in fact drive or move you towards a certain type or category of amplifiers...you won't use 500 Pass Labs mono-blocks if your speaker has a sensitivity of 100db and you won't use a 300B stereo amp on a pair of Magnepan 3.7's
Analyze your room, it's dimensions, it's construction, and review the surface types of the floors, walls, and ceiling. Then, try a variety of speaker types, keeping in mind that you will not fill a huge room with sound using a mini-monitor, nor can your ears handle a monster box speaker in a small acoustic space...get the right speaker for your room taking into account the 'sound' you like...then, and only then, you can find an amp that works well. The speaker choice will in fact drive or move you towards a certain type or category of amplifiers...you won't use 500 Pass Labs mono-blocks if your speaker has a sensitivity of 100db and you won't use a 300B stereo amp on a pair of Magnepan 3.7's