For the LCD-2.2 I like the Mojo very much. with the XC not so much. Although the XC is much easier to drive I find the XC too bright for my tastes nowadays. You can read my Mojo review from last year to see my thoughts on each pairing (near the end of the review). Compared to the Deckard the Mojo may sound not as full (from what I've read - I haven't personally heard the Deckard). If you want very good transients and exceptional transparency to the source the Mojo is your device. The DAC of the Mojo is special. If you want a more lush or euphonic presentation you may want to look at other gear like the WA8, ALO CDM, ALO Cv5, all transportable tube amps with the ALO CDM and WA8 having a built in DAC. There are a couple solid state amps like the FiiO e12 or Cayin N5 with gobs of power and bass boost, but i find their sound to be slightly grainy. Some find the Mojo thin with certain gear and I can see how they feel this way depending on where they are coming from. Others find the Mojo to be warm, and again, this depends on what gear one is coming from. Edit: I should emphasis that my LCD-XC is weak in the bass, and my LCD-2.2 is likely not as bright as the LCD-2f. Good 'ol Audeze variance.