Cayin N7 Digital Audio Player Review Introduction: Cayin is back with their unique take on the DAP world with the N7! Previous iterations of Cayin DAPs have been equipped with uncommon hardware implementations such as R2R DACs and tube amps. This time around, the N7 features a fully balanced in-house discrete 1-bit digital-to-analog circuit, it’s the start of the 1-bit line-up, followed by the RU7 dongle (for which I first heard the technology). But at just under $2000, is the digital audio player really worth your money, or just a gimmick...