Got my first real tube amp a couple of weeks ago (I'm a millenial that grew up on amp modeling). This '77 vibro champ appears to be completely original, including Fender special design tubes and speaker. Took it apart today to clean and tighten up the pots and tube pins and take some pictures. Sounds really amazing! Clean up to 5 then starts to crunch. Thought about re-capping just given its age, but I probably will just play it until it dies because it sounds sweet as is. One mod I want to add is the tone-stack bypass. Tried unhooking the 15k resistor from the Bass pot to ground, and holy crap it makes it a great distortion amp and way louder! Thinking about removing the RCA jack for the vibrato footswitch and installing a 1/4" TRS switching jack so I can use a double amp footswitch to engage vibrato and turn on the "RAW" bypassed mode. Has anyone tried that?