There is no single answer. Go to head-fi.com and become immersed in the puzzle from which you may never return. (Also consider accessory cables by Cardas or Equinox).
Need Advice: Which Headphone Amp?
Okay, so I recently purchased a pair of Sennheiser HD 600 headphones and now need a headphone amp. Can you give me recommendations? I have thought of the Antique Sound Labs, David Berning, Rega and Headroom. Are any of these are others good matches for the Sennheiser's. Thanks alot