I'm new to all this, i was wondering what would be the most worth it thing to buy, a 75$ Cmoy with bass boost Bass Boost cMoy v2.02 Amp - Premium Headphone Amplifier on eBay (end time 06-Dec-09 00:34:01 GMT) or a headroom total bithead, one being just an amp and the other an amp + dac. I am...