Cayin H80A or Ayre AX-7e

I own the Cayin and the sound stage is what sold me. Very specific instrument placement. The Cayin truly made my Sonus Faber Cremona Auditors disappear. My only issue with the Cayin is that the motor that moves the volume control when using the remote is too fast. Further, the volume increases quickly and I cannot listen at a volume setting higher that about eight o'clock. I wish the volume control was more gradual. I am upgrading my speaker cables to Acoustic Zen Satori. Should really smooth out the sonics of the Cayin.

I considered the Sim Moon i5.3 and bought the Ayre AX-7e. I have not heard the Cayin H80A, so I can't comment.

I know this is an old thread, so for anyone researching the Cayin. . .

I've got the Cayin H-80A and there is no trace of hum. Maybe the previous poster had a defective unit or some other interference. I don't have any experience with the Ayre but the H-80A has amazing resolution and clarity.