@jetter The Wotan is cleaner on top than the A21+ which I found a bit thick on top. The A21+ was very strong on the bottom as is the Wotan. The Wotan also has a FEEDBACK ON/OFF that changes the gain and was interesting at low volume (like a loudness button). I also love the remote-control feature of the amp, via my iPhone. I think the Wotan is preferred by me by a large margin over the A21+.
The Wotan reminds me somewhat of the KRELL DUO 175XD amp. That is a smooth warm amp with good power. The Wotan maybe has more grunt and maybe a touch less of that warmth. I loved the DUO 175XD and sold it to buy the CODA #16 which I like a bit more.
@rlovendale The Wotan vs the #16 is not that dissimilar, both are very powerful amps. With respect to things like soundstage, imaging, etc, they are similar.
Overall, the Wotan It is not as good as the #16, but it is maybe tied for the second-best amp I have owned (with KRELL DUO 175XD). I do think the #16 is an exceptional amp and the only amp that sounded better to me cost over $100k. I have not heard that many amps.
I think my Livingroom system with the Yamaha NS5000 speaker | Holo Audio Serene preamp | Schitt Yggi+ OG DAC (amazing unit) is a bit better than having the Wotan in the same setup. That naturalness (or calmness) in the sound with that tremendous power is amazing. The Wotan as a bit more of an aggressive sound but not fatiguing. Preferences may come into play here, but I think most would take the #16.,
On my Magnepan Mini in my office (look at Virtual Sytems). The Wotan is amazing. Maybe as good as the #16. That system is the Benchmark HPA4 preamp | Benchmark DAC3B or Schitt Yggi+ LIM DAC | Magnepan Mini speakers. I actually prefer the hot on top DAC3B in this system. If I had to choose an amp for this system, it would be the Wotan. Save a ton of cash and get the same enjoyment factor compared to the #16.
Basically, I am suggesting trying out the Wotan on a home demo, especially with a Maggie (and likely KEF which I have owned).