Apogee Groove is the best portable USB DAC and headphone amp for listening to music on your Mac or PC. Groove takes the same high quality audio technology found in the worlds most prestigious recording studios and delivers it to your laptop. Connect Groove to your computers USB port and your headphones...
Picked one of these up shortly after they came out to mix on the go with a laptop, without having to worry about carrying a bulkier interface around.
Long story short, there's a reason Apogee's new Symphony MkII interfaces have essentially the same headphone section has this thing. Plenty of separation and clarity to get a good mix, and I still found myself satisfied when using it for casual listening. Loads of volume as well for if you're driving higher impedance headphones. I was using Focal Spirit Pros with it. I barely had the volume at 20%, and that was plenty for my needs.
Only complaint really would be how hot it gets. Doesn't appear to be an issue, plenty of users report the same thing. You get used to it over time, but it certainly caught me off guard the first time. Would have personally preferred the unit use a 1/4" TRS jack instead of the 1/8" TRS jack it has, so adapters aren't always necessary, however the 1/8" connection is still impressively secure.
*this review was added by a PAShop.com staff member that personally owns and uses this product.