Warm, Smooth yet Transparent Amp

Hello All,
I am currently running an Arcam AVR300 for movies and music, 60/40 respectively. The music portion just isn't happening. Everything works but I'm not getting that "involved/pull you in" kind of feeling. I have gone through several pairs of speakers, Proac tablette 50, Triangle Titus 202, Von Schweikert VR1s and currently Vandersteen 1C. Since this is a wide array of speakers, I've come to the conclusion it must be the amplification.

So now I'm thinking of adding a 2 channel amp running out of the front channels "out". I don't like harsh, shrill highs, but rather a fuller, sweet sounding, yet transparent. Is this possible without spending several thousands of dollars? I am trying to keep it under 1200.00 so used but quality is what I'm hoping for. If Possible. I know that all of you knowledgeable people would have an answer.

I'm also running an Oppo 83 blu ray/cd. Dish K722 receiver for TV. Listen to FM, CDs and MP3 through the Oppo. I'm looking for all the things I have read about on these forums over the years. Good Imaging, transparency, involving. I've read good things about Conrad Johnson MF2250 (affordable used) and I just missed out on one on Ebay, earlier today. Now I'm just frustrated I guess.

Please assist if you can. Oh, I like folk rock, rock, certain new age kind of music. Examples, Dave Matthews, Eric Clapton, Sarah McLaughlin, and everything in between, *chuckle*. Any and All suggestions will be greatly appreciated.

Bruce