BoBzeBuilder wrote:Also, this may be a noob question, but why do I need an amp? Doesn't the PC deliver more than enough power to the headphones?
Is it better to spend $300 on a better headphone or $300 on an amp+headphone combo?
Generally, the PC sound card doesn't have enough oomph to properly drive quality cans. Good cans tend to be low-impedance, which means the amp has to push more current. That quite often means the card is asked to push more current than it's comfortable with, so distortion ensues.
If the source is compromised, even $10,000 Stax electrostatics won't make it sound good. The nice thing about the BitHead is that it's taking audio data in digital form through a USB cable and performing the D/A conversion in a box outside of the computer. That alone will raise sound quality as it's not happening in the massive EMI/RFI hash going on in a computer case. It can also swing the current needed to properly drive high-quality cans.