Hmm, I don't know actually. I find it harder to recommend dac/amps, especially if it's for running IEMs, because they aren't hard to drive. Unless the savants are hissing like a snake from your phone, which the mojo would be better about creating a quieter/blacker background. It's an improvement, but moreso in tonality than hearing extra details/wider soundstage/any other malarkey the reviews will have you believe. Tighter sound in certain areas, but it's not going to be a night day difference if you focus in on one aspect, Taking the sound as a whole though I find it to be an improvement.
Whether it's worth the money and extra inconvenience for that improvement, well, I find it hard to say. Especially at this price which is breaching mid-fi and into hi-fi. But that's my problem with most TOTL dacs and amps is that I usually don't find the improvements to be worth the asking price, and the mojo is pushing it.
What pushed me over the edge was that it is more versatile too, working equally well in a desktop setup and a portable setup. In the desktop environment I could have bought a schiit stack for what I want to do at around 60% of the price, but I would be unable to take it with me on the go, and the mojo's output impedance makes it more appropriate for IEMs while having enough power to drive the tougher headphones out there.
So seeing that I don't really find most DAC/amps upgrades worth it I've decided that the mojo will most likely to be my last one for a long, long time. The total package is very convenient for me, it's got a tonality I find more natural, doesn't have the glare that I find it most sabre dacs, and I find areas of the sound more articulate.