“Of the myriad accessories now available for portable music players, and specifically iPods, only a tiny fraction have anything to do with improving sound quality. If you want to hear more from your portable it pretty much comes down to headphones and headphone amplifiers. Designed to drive the cheesy white earbuds that come with the thing, the headphone amplifier in an Ipod isn’t quite up to the task of driving the more difficult loads presented by less sensitive, larger, sealed or open-back type cans like the big Sennheisers and AKGs…”

“If you do a lot of commuting, and/or like to use your computer listen to music at work, the folks at HeadRoom have your number. I myself fall into this group, and while my commute might vary quite a bit job to job (the film business is not for those who prize consistency and predictability) I listen to music at work as often as I can. A couple of years ago I reviewed the Echo Indigo laptop sound card, a device which will fit just about any laptop and offers two 1/8″ mini outputs to drive headphones or powered speakers…”