Hi Mike - Yes, I do like that combination of Quicksilver and vintage Klipsch. I believe if you ask Mike Sanders you'd find he was also a fan of some of the older Klipsch speakers with his gear. The Horn Mono is indeed made for high-sensitivity horn speakers. They have 18db lower gain (than the very similar Mini-Mites), as I recall, to aid in less tube noise. I have not found that to be a problem in combining the 92db efficiency Heresy's with the Mini-Mites though, and my pre-amp is also pretty high gain (I think it is around 24db). I've also used the Heresy's with a pair of 35wpc Quicksilver EL-34 Triode prototypes and also had no tube-noise problems. If you were using LaScala's or KHorns (104db efficiency), I might consider the extra expense. I think Mike also uses a beefier transformer on the Horn mono's too. It is a different design than the MM's and Mike would be able to tell you best what to expect and which might be best with the Heresy's. I don't have any direct experience to speak of with the Horn Monos, but would highly recommend giving Mike Sanders a phone call if you are seriously considering his gear. He is a straight shooter and tells it like it is. Absolutely no BS and right to the point, he is very knowledgeable and is willing to answer questions candidly if he does have time. You can try email too, but he tends to be quite brief in his email responses (it does take quite a bit more time to type a response after all). If he does have time to talk on the phone you would likely get much out of talking to him. I'm sure there are other recommendations that would also make excellent mates with the Heresy's too. I just happen to prefer Mike's gear as it has never disappointed me.
Good luck! I'd be curious to hear what you end up with and how you like it with your Heresy's.
Best,
Marco
