What Sensitivity with Tube Components?

   Whoever told you that was probably speaking of "single ended" tube amps, that have low power. There are lots of tube amps that will drive your speakers, I would recommend something in the 50 watt range for your speakers.
Good luck finding the right one and welcome to tube sound! Tish

I've been told that my 89db (sensitivity) B&W speakers will not work all that well with tubes and that at best, speakers should have at least a 90-91db sensitivity to used with tubes.

wcc10  - curious to know where you heard something like that ?  

It depends. you need to provide more info.
Which B&W speakers (model);  how big is your room and how are speakers placed in the room; How far away do you sit from them and how loud is it (average)  ?

Do you listen to all music genres or any specific ones ? 

If you can answer those questions I can make some suggestions. 

Cheers 



 
 

Thanks for the replies,
B&W CM6s speakers (for now)
Speakers situated on solid bookcase/cabinet about 7 feet apart right to left. Listening position about 7 feet from speaker position. I listen loud enough to hear it! (no distortion!!)
Room is about 24x24 feet with banks of windows on two sides.

Listen to a lot of Blues/Adult Rock, some Jazz and some Classical.

Look forward to any suggestions.

24 x 24 room - nice....
On a bookcase - against the wall ? 
are one or both speakers along one bank of windows ?
CM6s2 ?  like these 

http://www.u-audio.com/shopimages/gmosp156/0000000045302.jpg

what are you looking to improve upon and whats the current amp?