Marshall 1959T Super Tremolo

There is endless of speculation about the exact Marshall that was used for the Appetite For Destruction recording sessions. Most probably, the amp in question was a modifed Marshall 100 watts 1959T Super Tremolo, owned by S.I.R., a rental company in Los Angeles, and it was known as "Stock #39". The amp had been modded by Tim Caswell, who basically used the amp's unused tremolo circuit, with its additional pre-amp valve, to produce more gain. Also added to the amp was a master volume control.