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FedEx also has expanding foam that molds around your item. They'll box your stuff up for you and use the foam.

Go to FedEx. They have boxes. If they don't have one exactly the right size, they will cut one for you. Or... better yet... they will box it up for you for under $50. Worth it considering you don't have to drive around and buy tape and bubble wrap and all that. Hell... if you're selling the...

I have supposed schematics for #34, #36, and #39. That one above is in the same ballpark as each of them, but doesn't match any of them verbatim. Close enough for rock and roll though.

lol gonna need a bigger image. That thing is the size of a postage stamp.

Yes, it is more than that. It's like modifying a car. You can just bolt on a new part and call it good. But that' doesn't yield the best results. If you supercharge a car, you need to address how exhaust exits the engine. You need to address how air enters the super charger and gets cooled...

Marshall is notorious for inconsistency. If someone assembling an amp ran out of a 500pF for the tone stack treble cap, instead of getting up off their ass to find the right one, they'd just use the next closest value, like 680pF or 470pF. If they ran out of 10K dropping resistors, they'd just...

What I'm saying is the actual #39 mod can't possibly fit inside this box. The mod entails changes to many parts of the circuit that you don't find in a stock Marshall. I hope it sounds good though. Seems like a cool idea, especially adding the switches and gain control not found on previous...

I wonder how this compares to actually modding an amp for an extra tube stage. On paper, it should be the same thing—you're inserting another tube stage between existing ones. Instead of an additional gain pot on the front and a wire going to the grid of the next stage, you're just doing it in a...

go for it

If the tech knows what he's doing you won't have any problems. But it's hard to find good people out there.

Power supply. That's the key. The schematics are all mostly the same. But what isn't shown on the schematics is voltage. If you want a tight, aggressive, angry sound out of these, get the PI B+ node cooking and properly ground the preamp filter. The B+ in these amps is all over the place, with...

Any decent tech can do a JEL mod. Just bring your amp to someone local with the schematic. I can do it, but I'm in California.

82%? Must be a crypto fund or precious metal?

I'd rather not have to pay higher taxes/duties/tariffs in the first place. And then I'd rather get a $2K tax credit that carries over and that I can apply to any filing I want over a $2K check that will then count as income the government will just tax all over again. That said, assuming this...

I mean, you can't get much better info than right from the horse's mouth in that video... custom SD pickups wound to 7.7/7.8 with 9-gauge strings. But I doubt he was using those 40 years ago... Really, any PAF-style should get the job done. The difference between pickups isn't all that huge...

My faves were the Snorkler and 5150 III.

Yep. Hipshot open gear lockers are the best I've ever used. Put the string in, pull tight, lock it, clip it, tune it.

NOS 6550a are 42W tubes. Modern 6550 are 35W. A 2204's power supply is designed for 50W clean output (cranked). Biasing 6550a at 70% is asking the amp to produce more than 50W at idle, before you've even turned the volume up past zero. So while the tube is happy enough to dissipate that kind of...

This is correct. And ultimately, it doesn't matter. As long as the tubes aren't red plating, you're fine. You want the bias hot enough to get rid of crossover distortion and cool enough not to damage anything. Anywhere in between in fine as long as it sounds good to you. And really, there isn't...

Man... if it had 6L6 I'd be all over it