here's a link to the first profile I did:
It's a a Marshall JCM 800 the 50 Watt Version. Made in 1982. It's retrofitted with the ingenious Soldano Hotmod and recorded with a SM57 edge of dustcab into an Audient Preamp through a 2x12 V30 H&K Cab.
I dialed in the tone for use with a Tubescreamer so it's a little on the bassy side, but you do not need a tubescreamer at all. The JCM800 has a lot of low mid growl and a wicked attack. The Preamp definition was on 10 after profiling - so if the attack is too much just reduce preamp definition a little and you might want to reduce bass a little as well depending on your Pick Ups and playing. I am a pretty "hard hitter" on the guitars and use it with guitars equipped with EMGs.
Here's me just jamming with a guitar and playing the first riff that came to my mind - after I double tracked it. Sorry for the sloppy playing:
Ok, have fun and let me know how you like it. Be sure to grab that cab!