Just wanted to post that I had a VERY good experience with Bruce Ball and questyle in general. I brought a used CMA800R. One of the screws on the top plate wasn't fitting correctly and looked out of place. Amp was working fine. I contacted questyle initially to get a replacement screw and they decided to replace the whole unit for me for free. I should be getting the unit today. Great customer service in my book!
Another update. So I received the amp back. Instead of sending me a new one they either sent me a refurbished model or replaced the screw on my old amp. I can tell because the amp that was sent back seems to be an older model (the faceplate is slightly different). This is after Mr Ball emailed me and offered to exchange my old amp for a new amp due to the faulty screw. I've emailed him multiple times in the past 4 days without any replies. Hopefully he will email me back soon but, so far, I feel let down by their customer service.
Is there a problem with the replacement amp? Can you post a pic of the faceplate?