Won't be the same? Don't know how you figure that, there are 3 adjustment pots for supply voltage, bias current, & center voltage. Both mine worked when I bought them off eBay, had a couple mismatched transistors, replace with correct ones, 2SC1116a & 2SA747a. Completely recapped both. Sound just great. How does your "gent" have a patent on Sanken or Toshiba power transistors?? Sorry but mine both sound perfect. Don't know where you get your info, plus I also have spare power transistors on hand.