“When we look at sound alone REI does not have to fear this giant. The uber-resolving Mojo does beat REI when it comes to details but to my ears Mojo is less lively than its competitor. REI has more blood in its veins, meaning a fuller body and a more pleasing sound signature. Soundstages are similar but REI’s background is darker and hissing is absolutely not given, whereas I can hear Jupiter go nuts with Mojo. Layering from both devices is about the same and instrumental separation is pretty much equal with the REI being a tad in front. I personally think REI outperforms Mojo for what it was made. An add on DAC for your smartphone, whereas Mojo is more like an audiophile Swiss army knife with the same purpose, but REI simply does this job better than the Chord.