Tube amp for planar speakers and SS pre


I have wanted for some time to move to planar speakers - cannot get what I want from 3-way speakers on classical music. I own the pass labs x-1 pre which I intend to keep. From reading back posts, I can see the logic in mating a ss-pre with a tube amp. However, most tube amps sound loosey-goosey to me in the bass.

I suspect I am probably underexposed. So... What tube amps are likely to work well with my Pass Labs pre and planar speakers, specifically maggies or sound labs? Will I be able to get tight bass, or will there always be a trade-off here? I would love to have a better technical understanding of the differences between the way solid state and tubes provide head room.
judit

Showing 1 response by waldhorn

Hello Judit,
I presently own a pair of Eminent Technology LFTVI speakers which use linear field transducers. I have found them to be excellent overall and probably the best "ribbon" technology speakers I have heard to date for classical music.
My power amps (I have two) are older, upgraded Counterpoint NPS400's built by Michael Elliott (he can be contacted at altavistaaudio.com and is very experienced in circuit design) some time ago.
I believe that part of what you are experiencing is this: ribbon, or electrostatic speakers are notoriously inefficient, so you need to have a power amp with a high capacity. I had experienced problems similar to yours for a while, until I got hold of these power amps. They have a rating of 400 watts per side, and now that I have bi-amped the speakers, they sound incredible. (Bi-amping actually raises the output to about 650-700 watts.) I recently purchased a set of Mozart Symphonies performed on period instruments (the English Concert conduceted by Trevor Pinnock on the Archiv label) and the clarity is astonishing.
Hope this is of some help.
Best regards,
Martin