And just my personal opinion, using very hi-end DAC (such as SU-9 Pro) for low or mid range active speaker is a bit overkill, since the speaker itself generates much more noise and distortion than DAC, I would suggest just using entry level DAC (SMSL DO100 for example) and save the money for calibration software suite or microphone, you will get much more accurate and clean sound from speakers for same or less money.