I recently bough NuForce's Icon Mobile, a DAC/headphone amp. for IPod. Cost was about $100. After some break-in, I am impressed by the improved sound. I am using Etymotic 6i earbuds and the NuForce readily drives full size Sony MDR-V6 earphones. (It has an adjustable gain switch to toggle between earbuds and earphones.) This gadget is small, and straps onto an IPod (I have a 30 gig classic) with an included silicon strap. I am very pleased and think it represents a good value.