I am very satisfied with the DAC. Also a very fast delivery. The audio quality has improved dramatically.
Wow this is just awesome. The DAC changes what you hear dramatically. It opens up the sound makes it seem wider, fuller. Pianos sound great. If you are tired of listening to muddy, over compressed music, GET THIS. It even helps with the non flac music I have. Not as much but the mids and highs seem to clean up. Do not expect much if your sample rate is poor. But 256/320 Bit rate I did hear a difference. My test systems are HK onyx2, and Yamaha 5.1 system with Klipsh speakers. Both saw improvement.
An audiophiles dream at a reasonable price. JustBoom is the single solution for all high-end audio on your Raspberry Pi. I run mine with 192khz/32bit output and high quality SOXR up-sampling in MPD (Music Player Daemon). Excellent clarity and depth. My music collection has never sounded so good! If you love music, give your ears some loving!