These are radically different amps. The Adcom is voiced very warm and, in my opinion, has a very messy sound in the mids/highs. The bass is going to be warm and somewhat slow in my opinion.
If you are talking about the new Emotiva "Gen 3" XPA-1 amps, I would avoid them because they are thin sounding and do not have full bass.
If you are talking about Emotive "Gen 1" or "Gen 2", then these are actually pretty good amps. They are very fast responding. If you are going to use them for low end, they will have very tight and fast bass. Just swap the fuses out with something better. You can use cheap Isoclean gold fuses to really smooth out the sound and provide even better bass.
If your tube amp is warm and laid back, the Adcom might match the sonics a bit better. I suppose it depends on what you're trying to achieve.
If you are talking about the new Emotiva "Gen 3" XPA-1 amps, I would avoid them because they are thin sounding and do not have full bass.
If you are talking about Emotive "Gen 1" or "Gen 2", then these are actually pretty good amps. They are very fast responding. If you are going to use them for low end, they will have very tight and fast bass. Just swap the fuses out with something better. You can use cheap Isoclean gold fuses to really smooth out the sound and provide even better bass.
If your tube amp is warm and laid back, the Adcom might match the sonics a bit better. I suppose it depends on what you're trying to achieve.