Have you tried upgrading your receiver?
I recently purchased the RTA15TL's and find them to be amazing -- but with the Yamaha RX V1. My older receiver (Technics) didn't have any of the clarity, power or punch that the RX V1 produced.
I listen to SACD's - Spyro Gyra, Dire Straits, Pink Floyd, Steely Dan. On the Spyro Gyra, you can hear EVERYTHING!! Pristine sound thanks to the RX V!.
Did you know that xylophones make 2 sounds? The tone from the bar and the actual hitting of the bar. Chimes and cymbals go right out of hearing. Bass is clean, crisp and strong -- hits you in the chest. Pianos are in the room.
My suggestion -- Buy the following:
Yamaha RX V1
Pioneer Elite DV 45A SACD/DVD Audio player
Yamaha EQ 550 equalizer or equivalent (with pink noise generator)
I know they sound awesome because I own them as well.