I agree with zd. Pairing a passive preamp with an amp could give you much better results in your price range. I'd seriouisly look into offerings from class d audio among others.
Amp pairing for Sierra 2 bookshelves and Vtf-1 Mk2
I've been running this pair for a while off of my Bifrost Uber and Yamaha R-S500. I've caught the upgrade bug as it seems that my amp is pretty lo-fi compared to the rest of my setup and I would like to get the most out of my RAAL tweeters. I have seen some pretty good deals on a few amps: Rega Brio-R, an Outlaw rr2125, a Rega Mira 3, and a NAD C352. My budget is $500-600 shipped and I am unable to audition amps. I have no issues routing my speakers through my subwoofer so not having a subwoofer output will not be a big deal. I appreciate any help I can get and thank you for your responses!:):):)
Jemidy70
Jemidy70