well right now I have a yamaha rx-v1700 AVR powering my cornwalls and my sub. would that be considered my pre amp, and would I just hook up a tub amp to it? I'm assuming an integrated amp is the pre amp and power amp, and would also be the cheaper way to go. From what I've read, the bottom end sound of tube amps in my price range are a bit lacking so I'm guessing I might need a sub out on the tube amp as well, any suggestions?
Speakers: Klipsch RF-7 II, RC-64 II, RS-62 II, RB-81 II, PSA v3600i
Audio: Denon 4520ci with B&K Reference 200.7
Video: Samsung PN648500
Misc: PlayStation 4, Xbox One, Wii U, Apple TV, Chromecast