-Tiny for a headphone amp
-Bluetooth. Now you can ‘connect’ your hifi headphones to your phone without plugging into your phone
-USB C charging
-Well-machined, metal/plastic shell holds an ESS Sabre audio chip
-Bass boost and 3D surround features if you want to use them
-3.5mm single-end and 2.5mm balanced outputs and inputs
-Tiny. Could have used the saved space for a bigger battery.
So I got this for travel use because my smartphone case doesn’t play well with my hifi headphones and their big connectors. I can see this also working out for anyone with a newer phone that doesn’t have a headphone jack and doesn’t use Bluetooth headphones. As you might expect, it does what it does: act as a Bluetooth link with your phone and a wired link with your headphones.
Even though it is an amp you still have to turn it up quite a bit on a 600ohm headphone, but that’s a sacrifice you understand getting into a portable device. Otherwise, it works very well; the metal/plastic shell doesn’t feel cheap although I was surprised by the small size.
I put up a picture comparison of that with my PC mouse. I wish iFi had used the extra space they saved for a bigger battery. Being just an amp with the highly regarded Sabre chip, it sounded fine; I don’t use the bass boost or surround sound features but they are there in case you want to use them.