I just purchased the P10s and have been using Bel Canto EVO 200.2 amps configured as mono blocks, along with a tube preamp (Audible Illusions M3, soon to be replaced by Supratek Syrah). I am using Piega's own speaker cables and will be comparing them with my previous cables, Pure Note Reference Epsilons, once the P10s and the Piega cables have had a better chance to break in. I would also be interested in trying out the Jena Labs cables on the P10s, but that experiment may have to wait awhile.
I have heard the Tenor 75wi on the P10s and thought it was an incredible, almost magical, match, especially on SACD. I still have a LONG way to go before the P10s are properly broken in and before I can really assess the sound, but I can tell you that after 150 hours or so, they are really beginning to open up, with much improved transparency and coherency, a deeper and wider soundstage, and better articulated bass. I have been playing them virtually around the clock for two weeks now. Last night, I stayed up way too late listening to CD after CD with a big, goofy grin on my face. Fun stuff.
The big tube amps are very nice (and very pricey), but I would recommend that you at least audition some of the better solid state amps out there. I think you would find the Bel Cantos a worthy contender, and they can be had used for about $1500, which is about the same amount as the tax you would pay on the Tenors.
As for the cables, if you are interested in the Piega brand, contact Steve at HiFiFarm.
I am in no way affiliated with that dealer, or any other. Just a very satisfied customer enjoying the music. Please let us know what you decide to do.
best of luck,
Chris
