Chord sent me their Mojo for review, and I've been enjoying it for the past couple days. This is the first truly pocket-able DAC/amp that I've tested thus far, and that's a high point already.
The first thing that I noticed upon un-boxing this product was how much smaller it was than I expected. Given how popular and ubiquitous the Mojo is, I have of course seen it around. I didn't expect it to fit as easily in my pocket as it does, and that's a plus. With the included, short micro-USB to USB-A type cord, and a USB-A type to USB-C adapter, I've found that I can very facilely use this in conjunction with my Pixel and a pair of IEMs, on the go.
The next thing that I noticed was the design. I'll admit that in pictures, the marbles and their backlight can look a little bit tacky, but they're very appreciable in person. The solid aluminum, black powder-coated block is attractive without being over-stated or bling-ey. This isn't to say that its a quiet design or subtle, but it isn't so flashy as to be overbearing. The marbles themselves actually roll around, as they are essentially just set in the case over dip-switches, and they're awful fun to mess around with.
In my full review, I'll speak more to the circuitry design of the DAC/amp and its performance, but to my ear, just as with every other solid-state amplifier and $100+ DAC, it is absolutely transparent, adding no coloration or distortion to the sound and faithfully conveying the music from the source, through the headphones, and into my ears.
What I have noticed, speaking to the device itself, is that it can power everything I currently have to throw at, including the notoriously hard-to-drive T50RP Mk III, without even maxing out its output.
Something I do wish Chord would have included was a 1/4" output, as the two 1/8" outputs on the device are exactly the same, delivering the same power, both unbalanced. It would convenient to have the option to use more desktop-confined headphones, as this is certainly powerful and clean enough to warrant that.
A quick and final word on inputs is the following: there is a micro-USB port for power, and a separate one for signal. There is a coaxial input in the form of an 1/8" port, and an optical port, all on one side.
This product was provided to me for review by Chord. I am not being paid by anyone to write this review, to endorse the product reviewed, or for the content that I put in the review.
The signal for this amp was provided by USB from my computer and my Pixel.