Hello, I am looking for the correct fuse to purchase for this amp? What is it and where do I find one,please? Mine has the 12″ speaker.

I have 2 questions for 75 amp combo: 1.When mid boost is turned on, the mid potentiometer stops working. 2.When you turn on the Lead channel, the reverb stops working. Who has the same features? The amplifier looks without interference or modification.

Just one more time for simplicity sake, to make the fender 75 sing and go brown distortion instead of all harshness, just do this, unplug the reverb tank at the back of the amp just run any old audio left or right lead across the input and output. switch out the 12at7 for a nice 12ax7 and switch on. now you can dial in another 12ax7 gain stage with your reverb channel!,…..simple and totally reversible no need to gut the whole amp and you will get some good lead channel sound this time!!! i can live without reverb otherwise just use the effects loop with a reverb/delay pedal.

I have the 1×12 version. Great clean sound and reverb but the reverb is not so great with the distortion on. With a 25 dB boostpedal you can get the clean channel to the edge of break up. Put drive pedals in front of it and it swallows them pretty good. Not all 12” speakers fit the 1×12 version because of the place one of the transformers. I wish I could find an extra wooden ring to bring the speaker like 5 mm further to the front. ( originaliteit there is already such an adapter ring in it but it’s not thick enough.)

I bought a Fender 75 for $250 and have done a bunch of mods to it. This amp is an absolute steal—even if you gutted the entire thing, you’d still be left with a great Fender cabinet, a blackface-style chassis, a solid speaker, and a pair of transformers that can handle just about anything you throw at them. Buying all that new, along with the reverb tank, knobs, sockets, switches, etc., would easily cost close to $1,000. The first mods I did were basically “paint-by-numbers” following this mod from the Seymour Duncan Forum: https://www.seymourduncan.com/forum/showthread.php?252313-Pasta-Fender-75-style. I noticed a definite improvement in tone after that, and then went on to make the following changes: 1) adjusted the cap and resistor values in the EQ/boost section until I got a sound I liked (still planning a few tweaks to balance it out, but it already sounds better than stock); 2) removed the distributed load tap in the output transformer; 3) biased the amp for EL34s and disabled the low-power function to make that easier; and 4) installed a Weber Ceramic Thames 15″ speaker. It sounds pretty decent now! I experimented with lowering the voltages using a variac—it helped tame the boominess from the 15″ speaker, so I might tweak the preamp bias a bit to make that effect more consistent. I’m tempted to rebuild it from scratch with an entirely new circuit, but honestly, I’m fairly happy with it as is. I did try using lower-value B+ filter caps based on a tech’s suggestion, but that just made the amp sound lifeless, so I went back to the original values and much prefer it this way.