Other than that, instead of seeking a cheap speaker amp, look at AVR's. A cheap $200 AVR that does 50~75wpc (real world is probably half that) gives you a DAC and speaker tap AMP all in one with a remote. I used my HE-500 on several of my Receivers and it was great. Thing is you can use one as old as you want too.
I'm currently using an Onkyo SR-502 receiver with my HD-500. Sounds great. I don't feel I need anything better, and remote control is a real luxury.
Oh, not off the speaker taps though. Plain old headphone jack for me.
Edited by pp312 - 11/21/12 at 11:45pm