I'm looking to play FLAC and CD music, is the pro better then the original? My setup now is onboard line out to an 100 watt x2 amp, then to my sennheiser headphones or my JBL 3 way tower speakers. I see the original is $20 cheaper then the pro, but do not mind spending more if the pro is better. I have no interest in surround sound, just stereo. Thanks