Pros: build quality, portability, battery pack improvement
Cons: size (transportable), sound requires battery pack, doesn't drive 300 ohms well
This says it all really - it's a lovely transportable rig with the battery pack, but this Lisa III rig lacks the effortlessness and dynamism of the best desktop amps at this price, and in the $1100+ range, that's a lot of money for something which didn't drive the full-size 'phones I have well. Thankfully they're desirable enough that a quick buy/sell was easy, but this wasn't the rig for me.
Made me wonder what an ODAC + PSU would manage too - this is the best implementation of the Lisa 3 I've seen though, and a really solid product. I disliked the bass boost (worthless addition to any amp imo though), and didn't like that the PSU light glowed even when off, but the amp led glowed only when on - this kind of thing can lead to a bad experiences!
Sound was lovely - well balanced through the mid range, clear treble and well-detailed throughout, lacked a little control compared with the desktop amps but no lack of bass or harshness in the highs. Value is only because it's "a bit better than average for it's price point" (against current crop amps), but it's certainly worth an audition.