Quad ESL-63 and low-powered amps; Sun Audio, Atma


Looking for opinions about suitability of low-powered amps with my 63's. I currently have an Audio Note M3 pre, CJ MV-60 amp. Importantly, I cross the Quads at line level at 100 hz, first order with nice Vandersteen MH-5 crossovers to Vandy 2wq subs. So the main amp is relieved of much work below 50 hz or so.

Specifically, I am looking at Atma-sphere s-30 MkII OTL 30 watt amp, and possibly even a Sun Audio 2a3 SET 3 watt amp.

Given my crossover, does this lighten the load (power or impedance) in such a way that these amps would work fine? I imagine the Atma will have no issues, but what about the Sun?

Finally, I would love to hear any opinions about the relative sonic characteristics I might hear between the CJ, Atma and Sun. I listen to 50% acoustic jazz, 25% classical, 25% rock. 60% on vinyl... SOTA w/Grace 714 and Grado Ref Sonata1. CD is CEC transport to Audio Note 3.1 Signature. I value musicality and rich midrange over endless detail and "neutrality".

Thanks all.
montaldo
Funny you mention equalization because my quads and subwoofers did create a 8 or 10 dB bump which I cured very adequately with the use of a Rives Parc equalizer. Like magic. So I did use subs with my quads and totally agree they can be well integrated with esl-63s if you have the right subs and the right crossovers... in my case I used Vandersteen 2wq subs with the MH-5 ( I always get the model number a little wrong but it's the ones used in Vandersteen 5 system). Really amazing.

 I swore off solid state amps (it would be fun to ABX someday and see if solid state could fool me) though, I, I I am a believer that, in general, it is about execution and not about materials or topolology!)... But I had a great experience with subs and esl-63s because I lucked out and found subs that are fast and have pretty brilliant xover approach.
Someday I may go back to quads... They do things few speakers do in the treble region,  in my view. Peter Walker was a genius, and Peter Snell too. I should lobby to have my first grandson named Peter.

Did your listening test with Peter include tube amps, or was that the time period when tube amps were out of Vogue?


I have used 6336 single ened amp to drive stacked quad57 to my best satisfction.  Stay away from low damp factor tubep such as otl amps. Do not use sub woofer  unless you are not capable of detect  any phase shift of the speakers. 

Isn't this incredible that regardless of the topic or the thread wherein, our self proclaimed know all sucks you into this absurdly ridiculous, and exceedingly mundane, discussion of,... well, I'm in a loss of words in even how to characterize it. There's always an excuse and explanation instead of accepting the change in position which should be normal as we learn and grow.

Well, my friend willemj, with all due respect, I will be filtering your responses going forward. Not that I'm sure you care but just a little humility and acknowledgement of ones poor judgment can go a long way. Responding to your arguments is a colossal waste of time.

been a very very long time since I have mucked about with ESL-63..we sold them alongside KEF, Acoustat, ADS, Vandersteen, Beveridge, Infiniti, etc....
last time I owned a set of Quads was the 57 with a CJ45...lovely....

so i bought a pair at auction here for a song....anyway, they of course need rebuilding...which will actually be great learning fun...

plan to run them with my 1961 MC240

enjoy the music.....
If you decide not to complete the updating yourself I recommend Kent McCollum at Electrostatic Solutions for Quad rebuild. I bought mine from him and had.a great experience.

Have fun with those quads.