Plug in to the Lenovo T420 laptop's USB.
Plug in the Bose headphone gen 1 with noise canceling into the DAC audio socket.
Played the same song, and instrumental music, I had listen from the same laptop's audio pin.
I was surprised with the audio melody streaming from the DAC and my body start moving with the music rhythm.
A colleague borrowed it to compare it with his FiiO amp, no DAC feature and he was surprised the sound quality and ordered K1 right away. I love it everyday enjoying the music on a higher level.
Wow didn't know music can be so good on cheap headphones and speakers
I use it with otg and aux and listen to music in my ford focus not best quality but for the built in speakers in my car it sounds like I definitely put some money for only less than 30$ it's sound like I replaced my system for mid grade hi fi system in very satisfied only problem can't charge phone at the same time will be buying wireless charger real soon to solve that problem
The main thing, is original. The DAC works great with a mac, i only needed to connect to the USB port and all worked great, the sound quality is great, the music sound crispy and clear. This DAC combined with a good pair of headphones give you a great music experience without invest in an expensive amplifier.
I was disappointed when I received my brand new Audio Technica ATH-M70x headphones. The sound was pretty flat and boring. With the Fiio K1, I rediscovered the pleasure of listening to music on my computer. It's worth every penny it costs. It's dirt cheap and performs really well. I highly recommend it.