Also, consider that the issue may be with the Bryston's USB implementation, in which case no streamer that uses USB is gonna fix the problem. (As a point of comparison , my NuForce HDP DAC sounds great through SPIDF but horrible through USB, regardless of the source.)
OP, have you tried the Bryston DAC using any alternative USB sources, and did they sound any different than the MacBook?
OP, have you tried the Bryston DAC using any alternative USB sources, and did they sound any different than the MacBook?