I've always wanted to build an amp... I thought a 5E3 (Fender Tweed Deluxe), but then I ran across one already built on Craigslist for less than the cost of parts, so I set my sights on 5F1 (Fender Tweed Champ). When COVID hit I thought it would be the perfect opportunity since I had time on my hands. I ordered the parts from Franklyn Amps and set to it.... First off I have to tell you, I am NOT an electronics guy. I can follow a simple diagram... the red wire goes here and the yellow wire goes there sort of thing. As I was working on it, I thought to myself that I would be amazed it it actually worked. Well, when the moment of truth came, I wasn't amazed, and the thing sat on a shelf until a few days ago when I finally swallowed my pride and gave it to my buddy, who IS an electronics guy, who went through it and got it working and added some of his own magic. I retrofitted it into a tweed Pro Junior cabinet running into a vintage 1957 10" Jensen alnico speaker, and I'll have to say, it sounds AMAZING! It has a beautiful sparkly clean tone with the volume up to about 4, where it begins to break up. If you dare push it to the limits it snarls and screams at you like a banshee with it's tail on fire! No wonder the Tweed Champ is one of the most recorded amps ever! I have a couple of Fender modeling amps (Mustang III V2 and Super Champ X2), and I will tell you that the Tweed Champ models sound NOTHING like the real thing. There is a presence and aliveness to it that the modelers just can't capture. Well, on to the pics. The Pro Jr back panel doesn't really work with this, and I haven't decided what to do about that yet. The last picture is with the 5E3. I'm using a Weber 12a125 speaker in it, and it also sounds amazing.