Crinacle made a dongle DAC, and it's very good
The Protocol MAX is one of the most powerful dongle DAC/amps available, with excellent objective and subjective performance to boot.
Crinacle is most well known for his reviews and measurements of in-ear monitors as well as his own collaboration or self-developed IEMs, but with the Protocol MAX dongle he's making a move into the source gear market.
GoldenSound put it to the test, and it looks very promising.
