Just for the purpose of added info on this thread, I will add the post of a previous owner of a pair of Spectron monoblocs (on which I've inquired to him at the time).
07-18-10: Radicalsteve
Kiwi,
I owned the Spectrons (monoblocks with bybee and v-caps) with my CLX's. They were very nice with my ML ReQuests, but with the enormous resolving power of the CLX's I found the Spectrons were brittle, lacking in depth and sounding strained. With my dealer we did a side by side comparison with my Plinius SA-250 and frankly is was no contest, the Plinius won hands down, especially in weight, nuance and texture.
We thought that the Spectrons were challenged to deliver current across the impedance curve of the speakers, although the CLX's are not that hard to drive. I used to be a big supporter of Spectrons, and they sound very transparent at first blush, but after a while I realized they lack substance when driving electrostatics or ribbons.
Now my dealer has Bel Canto's with Soundlabs at home (he needs to get the CLX's!) and that combo is very nice - and based on that listening experience I would reank the Bel Canto's ahead of the Spectrons.
In any event, I would not recommend the Spectrons with CLX's, you will either sell the amps or the speakers!
Steve