I also would suggest adding the Clayton amps to your list.
Let me say first that I've never listened to any of the amps on your list nor the Clayton.
But assuming you have full-range dynamic driver speakers, and not hearing either, I'd guess the Clayton, Edge NL-12, and McCormack DNA-500 would easily surpass the other 3 contenders. Not only in speed, but potentially offering a far more robust, tight, deep, and simply more realistic bass and overall sonic reprodution.
However, I would challenge you to find a better more powerful and controlling amp than the McCormack DNA-2 Revision A model. Perhaps the most tube-like sounding mid-range ss amp, but with all the speed and fantastic bass that only the most powerful and best built solid state amps can muster.
If you should try the Clayton, Edge NL-12, the DNA-500, or a DNA-2 Revision A amp and if you do not presently own some of the better speaker cables available, I'd also highly recommend you audition the relatively inexpensive Audience Au24 speaker cables at the same time. (some reviewers consider the Au24 better than the Nordost Valhallas).
These tiny Au24 cables do so much to minimize time-smear, that with any of these three amps, you should hear a bass reproduction that few even know exists. On some lesser amps, the Au24s can sound as though some of the bass has disappeared, even though certain aspects of the bass may sound so much better.
-IMO
Let me say first that I've never listened to any of the amps on your list nor the Clayton.
But assuming you have full-range dynamic driver speakers, and not hearing either, I'd guess the Clayton, Edge NL-12, and McCormack DNA-500 would easily surpass the other 3 contenders. Not only in speed, but potentially offering a far more robust, tight, deep, and simply more realistic bass and overall sonic reprodution.
However, I would challenge you to find a better more powerful and controlling amp than the McCormack DNA-2 Revision A model. Perhaps the most tube-like sounding mid-range ss amp, but with all the speed and fantastic bass that only the most powerful and best built solid state amps can muster.
If you should try the Clayton, Edge NL-12, the DNA-500, or a DNA-2 Revision A amp and if you do not presently own some of the better speaker cables available, I'd also highly recommend you audition the relatively inexpensive Audience Au24 speaker cables at the same time. (some reviewers consider the Au24 better than the Nordost Valhallas).
These tiny Au24 cables do so much to minimize time-smear, that with any of these three amps, you should hear a bass reproduction that few even know exists. On some lesser amps, the Au24s can sound as though some of the bass has disappeared, even though certain aspects of the bass may sound so much better.
-IMO