Need help from Quad ESL 63 owners.

You might also want to try using a good subwoofer crossed over below 100HZ electronically 18 or 24 db/octave. This will eliminate some of the glare/strain on the midrange and increase the effortless sound. Tune in the woofer with a solo piano disk.

The ESL-63 and Audio Research equipment is a match that can yeild spectacular results on voice, jazz, chamber and small scale symphonic work. I can tell you that the SP-8 MK-1 and MK-2 do not work particularly well with the 63. Although it does much to tame the rather aggrssive and forward nature of the Hybrid Classic 60,the tradeoff in a boomy bottom octave and a less than extended top end does more damage to the Quad than good. A much better match for them is to reverse the situation you have now and go with a more modern ARC circuit for preamp and try it with your 60. If you still find it unpleasant,try moving backwards towards the D-115 type of all tube cicuit.

I own and sell Sound Lab electrostats and I've owned Quad 63's and 57's. The requirements for a speaker cable for a full range electrostat are a bit different from the requirements for a conventional speaker.

First, because an electrostat typically has a fairly high impedance in the bass, there is not as much of a premium on high current capability. Second, because an electrostat typicaly has a low impedance at high frequencies, you want to minimize series inductance to preserve all the air and delicacy the stats are capable of. Third, you want a very time-coherent cable, because getting everything spot-on timing-wise gives an almost magical "bloom" to the instruments, as well as a bit better soundstaging. Very few conventional speakers benefit significantly from a time-coherenet cable, but full-range electrostats do.

I have investigated cables for electrostats rather extensively, and the best I have found are Magnan cables, in particular the Signature. Goertz is also good, though I've had customers replace their four grand silver Goertz with the one grand Magnan Signatures after an audition in their own systems. Analysis Plus is good bang-for-the-buck. All of these cables are designed to minimize the "skin effect" and are thus time coherent (the Magnans especially so), and all are low inductance (no twisted wires).

David Magnan uses stacked Original Quads as his reference speakers, so it's no surprise that his cables work well with electrostats.

hi frind, tell you what. go buy a pair OTL.amps,a cat preamp,good set of NBS.CABLES YOU WILL BE IN HEAVEN, YOU SEE QUADS WEAR MADE FOR GOOD OTL AMPS, HAVE A GOOD DAY JOHNJ