I had used the Gilmore Lite 2 and the Chord Qutest to audition ten or more headphones, including the AFO. They had many more expensive amps available, but I had already bought the Gilmore, which is half of the GS-X circuit, and with few frills, for a lot less money. I had found the AFO to be the second warmest sounding cans out of all I had tested, while the Gilmore is analytical, and detailed, and not warm. That amp might be the better match for you. The tube part the Lyr 3 (where I don't understand the circuit as a whole, including why they can use one tube instead of two), may give you a warmer sound, with higher distortion and less detail. I don't trust the distortion numbers Schitt gives for that unit. By simple economics, in terms of its $624 list price including a headphone amp, a DAC and a phono preamp, they must be cutting corners somewhere in that unit (like in the power supply). There's supposed to be unique filament and plate power supplies for the tube specifically, which all things being equal, would raise the cost of the unit, where mid-fi transistor gear would already be cutting some corners by using a shared transformer, rectifier, and capacitors for different sections, with only unique voltage regulators.
Not sure how the Mojo would stack up to either of those, but again, you may want to use a DAC that's not overly warm, and gives lots of detail. It's possible that the Chord Hugo 2 would have my personal amp and DAC combination beat, and it should, for the price.
One thing I do like about the Mr. Speakers line is the ability to use engineered solutions to modify the sound, rather than spending money on dubious aftermarket solutions, and having to deal with listening reports online from people you don't know, not knowing if what's described is real or imagined.
Good luck.
