Peavey has a computer program out that will run through your amplifiers and turn it into anything you want including changing tube amp voltages and even moving the cone anywhere in the box you want. Its a little over 200 bucks and it will model virtually any amp ever built including custom jobs you want to make. The program is called "Revalver". If you search : peavey computer modulators you will find it at the top of the list. Its a great buy and I reccomend it to anybody who wants to create their own sound.