here is the link of DCS bartok measurements by golden sound. see how one channel behaves differently than other in almost all tests and errs by about 6db. even a $75 hidizs S8 dongle as DAC has better measurements than this $17500 boutique dac. Thanks to golden sound for measuring DCS bartok. prominence of odd order harmonics reveals the reason of DCS bartok's overly bright sound. https://goldensound.audio/2021/10/12/dcs-bartok-with-headphone-amp-measurements/