Pros: rechargeable battery, great bass boost, plenty of power, outstanding price/performance ratio,rotary volume
Cons: can't charge and play, cover is a little thin,doesn't come with LOD cable
For a complete in-depth review you can hit my page where I've gone over this in detail. I just wanted to list the pros and cons above and leave my feedback here with the star ratings so it can be added to everyone else's opinions. For the record though, I don't think there's a better price/performance portable headphone amplifier on the market. Just a crazy good value for a rich and powerful sounding amplifier.