I had my eye on the Yamaha THR10C for a while and found one at a discount, so I splurged. I haven't played any of my bigger amps since I got it a week ago. Get the one that fits your musical style - original THR10 for maximum versatility, THR10C for sweet breakup, THR10X for more aggressive gain. You won't regret it.

The amp has AUXILIARY volume knob for use as a music system.

If bluetooth is really a deal-breaker, couldn't you use something like this (or its more versatile big brother)?