I got one a year or so ago.
Very very pleased.
I had a PS Audio Power Plant Premiere (PPP) at the time, but the Power Inspired guys were offering a great deal on the AG1500 on the Wigwam forum, so I thought I'd give it a try. I do like to try different things!
Well -- the specs on the PS Audio gear look better, but in terms of the sonics it unleashed from my gear, the AG1500 punted the PPP into the long grass. I was surprised, no, amazed!
Still very happy with mine.