I am not one that likes to be surrounded by amps, as it makes me a bit anxious to have so many high $ value items sitting there unused and a bit stressed in deciding what I want to listen to. Armageddon created a sense of excitement but it does not do well with sensitive iems and I suspect headphones. This is one knock against it, in that it is only good for Immanis as I do not own any other HP. None of my IEMs will ever work with it, where as the 465 and AIC10 has a really good black background.
As for the sound, I found 465 and AIC10 to have more depth and a refined sound that kept me wanting to listen more. AIC10 w/g73r had a laid back presentation (mids & bass) that works so well with slower paced music that you can enjoy the decay of the note like drinking a fine wine (swirl the flavors in your mouth to observe every last bit before consuming) and 465 had an faster paced presentation with tight bass even though the overall sound signature is more warm.
As of this writing, I still own a wa33 elite jps with upgraded tubes that gives a clear and holographic sound that can't be matched with any of these amps. If I sell this amp (currently posted in classifieds), maybe I would consider Armageddon. But I would love to hear back from
@Proxima Centauri about an amp that can deal with sensitive HP, provides enough power to immanis, and has that same sound signature to Armageddon. That might tip me over the edge to buy.