POINT NO. 1
The speakers you have are not deficient. B&Ws intentionally makes their speakers as accurate as possible while being able to make a reasonable profit at the price they sell their speakers for. The 800 series speakers are no exception to this rule.
POINT NO. 2
Tube amplifiers are often designed to have a "warm" sound signature, but they don't have to. I typically try to avoid any amplifier with a sonic signature. The most common attribute of a tube amplifier is a rolled off top end, and weighty slow bass. This isn't to say wouldn't enjoy the sound reproduced. It's definitely not accurate.
The displeasure you are experiencing with your speakers is likely caused by one or more the following-
- inadequate or no acoustic treatment in the room
- poor arrangement of speakers
- insufficient power for the speakers (keep in mind these speakers can get power hungry)
- the room just isn't good for high fidelity playback (with or without acoustic treatment)
Bob Carver designed a pair of extremely expensive tube mono block amplifiers in the 90's, he called them the SilverSeven. He replicated their sound signature with a transistorized rendition at a significantly lower cost with the M-4.0t stereo amplifier. You can find this amplifier for under $500 quite often, the original SilverSeven costs significantly more.
