Cayin C5DAC (Aka the Spark) August 23, 2015August 23, 2015 buddhahacker C5DAC, Cayin, Head-Fi, Reviews Review of the Cayin C5DAC. Included are comparisons with the Geek Out GO720 and the Cozoy Astrapi. Cayin C5DAC (Aka the Spark) Like Loading...