HIFIMAN EF400 R2R DAC / Headphone AMP - I made a review about it, it has tons of driving power, type-c USB input, and both OS and NOS modes : r/headphones
HIFIMAN EF400 R2R DAC / Headphone AMP - I made a review about it, it has tons of driving power, type-c USB input, and both OS and NOS modes : r/headphones