Hi Seawolf, So glad to hear you are back with the venerable little APT , they are hard to beat, I am still indebted to you & P. Warner for the heads up on these. After messing around with some other gear these days, the one thing that I think is missing on these wonderful units is/are XLR in/outs. I am surprised they were not part of the desing, he thought about everything else, must have had a good reason for leaving them out of the scheme.
The APT w/the Crown PS 400 is a nice little combo.