hi Guys, I've just installed MIL replacing my A2. I only had a chance to spend 15 min and it was straight out of the box, so just the key impressions: the differnece isn't huge but it is obvious. The sound is cleaner, more precise, sound stage is probably wider and base is better defined but less prominent (as much as you can notice after 3-4 tracks). It is much more Chord sound style. One thing I'm not sure about (if this is good or bad or it is kind of trade off) - the sound is cleaner but might carry less information. I don't know. At first the ear enjoys this clarity, at second notices something is missing. So what is missing? just useless noise or noise with some low level information too? do you have any thoughts on this?