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And that is from what retailer?

Well that explains a lot lol. I totally missed that in the manual. I'm not even concerned with tapping with this tester. It's more about what is the noise floor. Some tubes showed a 3 or 4 or 5 without tapping. Tap and nothing changes. Test the tube again and tester shows 0 for noise. Tap and...

Testing power tubes now. Same thing. Inconsistent and worthless results. Known bad tubes test good. Known good tubes test good. It did catch one worn pair of JJ EL34s, though. But a pair of bad EL34s that instantly red plate in any amp tested good lol... Noise/microphony test showed "7" for...

Just got one from Sweetwater. Garbage. Good thing they have 30-day returns. I tested about 20 preamp tubes with very inconsistent results. I previously tested all of these tubes in V1 of a high-gain amp, so I know which ones are noisy and which ones aren't. The Orange tester's regular test...

The stuff Marshall used back in the day was most likely shellac-based. I recently watched a documentary about the stuff and how it's made. Looked very similar.

Man I hate orange drops. Even the older non-polyprop ones. For me, Vishay/ERO MKT1813 all the way.

The red stuff in Marshalls isn't any kind of dope, epoxy, coating, etc. It's simply akin to machinist layout fluid for marking QC. It burns away when you put a soldering iron to it. No idea what Wizard uses, but judging by the mess on the board in the photos posted earlier, it gets everywhere.

Wish I could try a Wizard and see what all the fuss is about.

Thanks! G12H-75 Creamback, 8ohm. EDIT: Also vintage G12M-25 Greenbacks (cream plastic) in the Marshall cab.

Clean build! I played it the other day and it rips

That's high praise, thank you! And I should be able to use an SLP Reissue. Just need to make sure there's room and if it's a PCB amp, I need to make sure I can rework the board. Turret board amps are better in that regard because I'm literally changing how the circuit is laid out, not just...

In the stock amp, you were referring to the treble-peaking and mixing circuit. Those are no longer present in my builds.

That area is no longer the same type of circuit used in the stock amp.

@Exo-metal knows how to chug!

Preliminary clips. Amp wasn't quite finalized yet. Playing with NFB, voltages, etc. It's a bit tighter and angrier now. But should give a general idea. Unboosted. The pedal on top is a gate.

What other cabs/speakers have you tried? My go-to is a Bogner 4x12 with G12H-75 Creambacks. I think Ted's G12M-25s have more snarl, but a slightly thinner mid range.

Got the base mod done and did some play testing yesterday. Sounds REALLY freakin' good. I'm actually blown away by how good it sounds. And that says a lot because I've built a few of these already, so the honeymoon period is long gone. Seems like each one sounds better than the last haha. But I...

That amp had a few... odd... things done to it, to say the least. I restored it back to original Langner spec, along with a few personal updates. I think the owner is very happy now.

I figure if you're good enough to reverse engineer a circuit from photos, have at it lol... Plus, I didn't invent this mod. It's already all over the internet. But I did do a lot of work to figure out how to implement it properly and get it noise-free, no oscillations, etc. And re-voice it here...

Home stretch! Heaters and socket wiring done. Just need to get some shielded cable wired up for the input, install some custom options the owner requested, and test a couple voicing options I'm playing with.