Chord Mojo portable DAC (open box)
"When Chord Electronics launched the Mojo at London’s Shard in October 2015, we knew John Franks and his team meant serious business. The Mojo would be a smaller, more easily pocketable DAC and headphone amplifier than the Hugo but it would still talk to PCs, Macs and smartphones. Rob Watts’ code running on an FPGA was used. Watts’ WTA digital filter had been transplanted from the Hugo to a much smaller package but the Mojo launch event’s implication was that every smartphone user could/would use one stretched marketing hyperbole to its very limit"
"Franks had shot for smartphone dominance only to ultimately find that many Mojo owners found his baby DAC’s sound so satisfying that many were letting it run 24/7 in their home hi-fi systems. Four years since the Mojo’s launch, we still struggle to find a similarly-priced DAC that can compete with the Chord unit’s detail dig and sense of inner space. It’s also an off-grid listener’s delight, a trickle charging system keeping the internal battery topped up as it plays"
"And it’s that internal battery that allows us to take the Mojo out of the house, to a local cafe, to work or on to a plane or train where it can even drive more challenging headphone loads; something that few smartphones can claim to do. Strapping the Mojo to the back of smartphone without obscuring large portions of the latter’s screen remains a challenge that would make even the most devoted of head-fiers throw their hands up in defeat" Quoted from Darko
link to manufacturer
read the review in Earbudzone
read the review in What HiFi