This site is for the DAP310, but as you probably know, Mike and Kay Dorrough created a magnificent follow up to the 310 called a 610. A regular customer asked me to look at one for him. I’ve repaired a couple of them, but this one is exhibiting very strange problems. If you have repaired one of these, please send me an email. I’d like to pick your brain a little bit. UPDATE: See my update in the comments section of this post.