Here's a demo of a Modified by Rivera Fender 68' Deluxe Reverb reissue. Available only from Sweetwater Music. This is a recreation of the mods made famously by Session guitarists in the late 70's through the 80's and that were used on thousands of hits. Including Michael Jackson's "Beat it Riff"/
Back then Session Guitarists need multiple tones from clean to mean in one amp.
Later, Paul Rivera brought some of these features to his Fender designs.
Mods include:
-Separating Channel 1 from Channel 2 making it a 2 channel amp
-Clean channel modded for more headroom, clearing up the flubby bottom, adding treble bright and middle notch for 4 distinct tones.
-Adding Master control with Pull for Gain, Presence, 6 position Fat switch for thickening the higher strings. Treble bright and mid notch added to that channel as well.
-Hum adjust added to match all types of preamp tube brands.