Mr. Beaudongles – "I knew a man, Bojangles, and he danced for you in worn-out shoes, silver hair, a ragged shirt and baggy pants, the old soft shoe, he jumped so high, he jumped so high, then he'd lightly touch down…". So start the lyrics to a famous song. Questyle's M12 [$139] might sing its own. It's a compact dongle DAC that promises a -130dB noise floor with just 0.0003% THD and a smart impedance detector for headphones to auto-set gain. The ES9281 DAC handles up to 32/384 PCM, DSD256 and MQA. On paper then, this mini beau looks set to jump high whilst its asking price certainly touches down lightly indeed.