Does Adcom GFP-715 sound as good as the GFP-750?


Hello,
I have a couple of questions about Adcom preamps:
1. Has the Adcom GFP-750 been discontinued?
2. Does the new Adcom GFP-715 sound as good as the GFP-750, or is the 750 sonically superior?
Any other comments?
Thanks!
daltonlanny
For the 400-500 dollar price difference(new),I didnt think so. I have my 715 pre matched with the Adcom 5500 and Klipsch Forte's. Sounds exceptional at low volumes but gets very bright at higher volumes.