Cheap and Easy to use. Doesn't seem to degrade audio quality, and gives a pretty good boost to the small speakers I have it hooked up to.

Awesome alternative to using a more expensive wired personal monitor amp. Coupled with some ZS10 pros, and the proper adapters/cabling - you have a viable low budget wired IEM rig. We use these in my band, and we all love em.

I imagine quite a few folks have trouble with Windows 10 reducing the volume on headphone jacks. This solved that problem. Worked great right out of the box, had all the cables needed, great purchase.

This has done exactly what I wanted. It raises the volume of my headphones with a volume control. Some reviews indicate it doesn't have all the cables needed but mine had two audio cables and a charging cable so I would say it ships complete. Good value.

The exterior box arrived crushed, but the product box was undamaged and functions fine with my aging laptop . and ears. Not easy to pair with devices.

The amp assist to pick up a lots of background instructment which was blended vs without the amp. It gains a good amount of quality. Output from Spotify HD quality, a usbc to headphone jack convertor and output on a AKG K551 headphone

I use this with my MP3 player mostly. A lot of them appear to be created at low volume and need some oomph added. This is a lot better than some cheaper and smaller amps I've had and only slightly more expensive.