Hey Gang, Just in...! 1969 Marshall Super Tremolo 100 Watt Plexi. One main thing is I did detailed the cab inside and out. And that in itself is worth millions...!!! A very old Marshall correct R.I. logo. Let the story begin. First off. Chris Merren did all the service work on this amp. Top to bottom. And those who know. Know...! The best in the Marshall World. Let's start with trem. It always has to be disengaged. It sucks the life out life out of it and it loses it balls...! All filter caps have been replaced . New set of tubes replaced and biased. The amp is smooth sounding with plenty of gain. Bass at 1 or 2. Presence and middle at about a 5 or 6. Volume at 11 and and you disappear... !!!! I'm not brag'in. Just the facts. We saw the chassis holes. For the life of us, we don't know what was there. She's perfection now. Any other info let us know. BH at Guitars West, Inc in Murrieta, Ca. 92562