Tom Scholz built More Than a Feeling's wall of guitar in his Watertown basement on gear he made himself. A 1968 Les Paul Goldtop with P-90s ran into a 100W Marshall (widely cited as a 1959 Super Lead Plexi) cranked into one of his homemade prototype Power Soak attenuators, plus a homemade compressor/sustainer and outboard EQ. The Rockman is a red herring — it didn't exist until 1982; the 1976 record is power-soaked Marshall plus DIY compression, heavily multi-tracked. The result is ultra-sustained, glassy, and impossibly layered.
One pickup. One volume. One tone. No neck position, no coil split, no menu. The Les Paul Junior's single bridge P-90 into a clean amp is a complete tonal system. Here are the settings that prove it.
AC/DC guitar tone settings for both eras; the SG, the Marshall, amp dials by era, and how to approximate it on Helix and Quad Cortex.
The 2555 Silver Jubilee sits between the JCM800 and the JCM900 in both era and gain structure. Here is what makes it different, who used it, and the settings that get you there.