FiiOJadeAudio KA1 Headphone Amps Tiny Amplifier USB DAC High Resolution Lossless for Smartphones/PC/Laptop/Players(Lightning, Black)

works perfectly!

As advertised

Lo use para uso en el auto,me sorprendió lo bien que se escucha

As a musician, I often need to play recorded material into the mix. The easiest way to do that is by plugging the phone into one of the stereo channels on my mixer. Sadly, phones don't have 3.5mm audio jacks anymore, so like most people, I was using a cheap USB dongle. It worked. More, I cannot say.I finally got sick of the crappy sound and decided to find something that would be better. In the world of the audiofile, spending hundreds or even thousands of dollars is typical for a good audio interface. I wasn't prepared to do that for this application.Enter Fiio. I have used Fiio products in the past and they've always delivered great bang for the buck. The KA1 is no exception! The high end is far more distinct than the cheap dongles, and the sound stage is noticeably larger. Finally, the bass is very natural and well-defined without being boomy.The build quality seems very good. The cable looks to use good materials and the casing on the body is aluminum, not cheap plastic. While this device basically sits on my desk, it is very small and portable if you have a pair of wired headphones you want to use on the go. This will sound much better than what's built into your phone.

Sensacional

The description says "3.5mm single-ended and a 4.4mm balanced, 2 headphone outputs", which isn't true. It's a single 3.5mm output only, which is exactly what I wanted in my case. This means the unit is small - tiny, in fact. The materials feel nice in the hand - no plasticy garbage here - and the boost in volume is impressive. Sounds quality is much improved, with more detail at much lower volume settingsWorth the money (and more)

If you want to get a high-sound quality out of the 80-ohm DT770 Pro, you can get this tiny amp. It works really great if you have a USB-C (Lightning) port on your PC motherboard. I like how it works on almost all the smartphones that support USB-C. It's good for the price and it comes with a USB-C to USB-A adapter, which means you can connect it to the motherboard even without having a USB-C port! But for the best performance, it's better to connect it to the USB-C port directly. This will do a good job for the 80-ohm DT770 compared to an expensive amp.