SMSL DO300EX DAC & Headphone AMP SMSL DO300EX AKM Review Support MQA decoding, support MQA-CD; New 3rd generation XMOS XU-316, PCM support up to 32bit/768kHz, DSD support to DSD512; Flagship DAC chip AK4191+ AK4499EX. Dual mono design, one AK4499EX per channel,
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