tube amps and electrostatics


What kinds of experiences have people had mating tube amps to electrostatic speakers (full range and/or hybrids)? I love the sound of both separately, but am concerned about the reactance of electrostats with tube power. I already own the CJ CAV-50 and am looking to upgrade my speakers with something in the $2500 range. Thanx, Dave
dabble
I've had great luck with Martin-Logan Aerius speakers mated to my Audio Research VT-60 (50 w/ch)
I recently changed from a highly rated 400 wpc @ 4 ohms solid state beast to 100 wpc (triode mode) Cary SLAM-100 monoblocks driving Martin Logan SL-3 hybrid electrostats. The sound with tubes is far superior at low, normal & loud listening levels. At VERY loud levels the SS was better. Ultimate bass extention was better with SS, but this is offset by a more realistic bass tone with the Cary's, particularly on strings. Sound stage, presence, musical realism, emotional impact - all far better with the tubes.
Dabble, I believe your amplifier would work well with most hybrids, but not necessarily with full range electrostatics. The reason is that full range electrostatics usually have a very high impedance in the bass, often over 50 ohms, and your amp would not put out much power into this load and so would clip prematurely. Electrostatics typically have a very low impedance at high frequencies, but with the CJ this shouldn't cause a significant frequency response anomaly. And remember there is relatively little energy up around 20 kHz, so the amp is not likely to clip as a consequence. I sell Sound Lab electrostatics, and they have a couple of hybrids that would work with your amp. I think the Martin Logan and Inner Sound hybrids would work well also. Avoid used Acoustats or Martin CLS's as they will give your amps a severe pain in the output stage. Historically Connie J. EL-34 based amps work well with Quad 63's (& USA Monitors), which are full range electrostats. I have a few reservations about these Quads, however, and personally prefer the Originals. But, I have no experience driving the Originals with EL-34 based amps, so while I think it would work I don't really know. I'd like to ask some specific questions that might help me make a more educated recommendation. Don't worry, I'm not going to push my product at you. I am one of you, not one of them. Audiokinesis@home.com.
Just checked with two experienced sources. Your amp will work fine with Original Quads - use the 4-ohm tap.
With stats you have to be careful because the impedence curve varies a lot. You may have some trouble in the bass since some tubes cannot drive very low impedences. If you do not want to change your amp, which by the way is a very good one, you should try the Maggie 1.6. These are different from stats since they have a very flat 4 ohm impedence. I have the Maggie 3.6R and am driving them with OTL tubes with great success. The web site is www.magnepan.com.