Jadis amplifiers: rolled off treble?

Chris, are you using one with your sound labs? If so, it would explain the high freq. roll off. A lot of tube amps without a tertiary feedback winding will roll off the highs. I agree with Loki1957, but not on electrostats. 'Stats need the power in the highs, not the lows. For your Soundlabs, try a Mac 275 or and EAR 509 or the new Cary that uses 4 kt88's as all of them have the feedback taken off of a third winding which exhibits less phase issues from the capacitive load presented by the electrostatic speakers. Those amps may not have the power you need, but work fine on a Quad 63/988/2908 ect. I am sure that there are others out there. To put into perspective, my EAR 509 (100 w) just cruises along with the Quads, yet the Quads bring my ARC D 250 to it's knees (250 w). I haven't tried the EAR 509 on the A-3's as of yet as I have a repair issue needing to be dealt with. Presently I am using Parasound JC-1's. I have a Defy 7 that is just magical (although tilted towards the mids) on cone speakers.

Ps: Sorry for not having gotten back to you before. I've been slammed at work, and income taxes were just due here in the states- ugh... Feel free to email me about your A-1's as I have just recently purchased a set of A-3's.

Forrest

Yes Jadis amplifiers sounds nice & romantic but has nothing to do with REAL SOUND !
it is simply romantic sound and that is all.
Yes it is on the warm side, you like it or you do not like it.
CJ is lesser warm in sound, but has another kind of golden fluid stereo typed coloured non natural sound als not found in real live music.
The accurate amplifier should show romantic emotions in an accurate uncoloured breathing way, this is only up to the very very top end of solid state power-amps(very expensive)

Not the JA 500.

It is the most realistic linear sounding amp in my stable. It had the Da Hong input stage mod, perhaps this removed some of the above mentioned colorations.

I remember reading HP and he thought the 500 was the more "detailed" amp than the 200 or 80. I find the 500 to breath life into the music without adding any coloration.

There is no top end roll off with the 500.

Peter

If you are looking for reality and not tube warmth I suggest the 500.

gentlemen:

unless you have taken a spectral analyzer to a concert hall, you have no idea whether high frequencies are attenuated. depending upon your location, high frequencies will be attenuated.

an amplifier which does have a roll off, say atstarting at 200 hz, sounds more natural, relative to a rear location in a concert hall, than a so-called "flat" frequency response.

i would prefer to be able to enjoy the music than suffer through poor recordings.

the issue of "reality" will never be resolved. this subject frequently generates disagreements.

what is more important is finding soime equilibrium between resolution and comfort. each one of us has an optimal level of complexity and intensity that is preferred. if we can can
come close to this ideal, selling equipment and concern about "roll off" will be superfluous.

Mrtennis,
Good point. May I suggest reading the online TAS review of the LAT 1000 speaker http://www.avguide.com/products/product-3830/ ? The LAT 1000 is also considered by many people a rolled-of speaker.