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So many people have contacted me with mechanical hum/whine with their MAV 2203X. So many. You can fix it by hitting the ends with a rubber mallet or hammer, but it’s still a noisy PT. Hums like a …. As far as the 1959HW goes I had two here, one pre MAV and one MAV and while the voltages are...

Hey, thanks! I appreciate that someone gets something out of the content!

Great job!

You really want to check the ratios measured from the wiper. e.g. do both read say 20% of the total resistance

Thank you man! Appreciated.

Extended play at the end of the clip.

Thanks for posting this!

The model code on the OT is 100% definitely Heyboer. PT looks like it too.

If it's stratchy like a Presence pot can be, it means you have DC on the pot which can be caused by a leaky coupling cap. You can check with a multimeter. Just saw @griff10672 said the same thing! (y)

Great clip Mike, you’ll pulling some awesome tones with that Strat. Great playing dude!

If you’re comparing the sound of a mic right on a speaker, then sure they sound the same through your studio monitors. But they are not the same to play through. Not even close. A tube amp is an instrument, you play it.

There is a PayPal buy page for US supplied Marshall reissue loops at the new DIY website. https://evolvediy.com/?page_id=4791 Shea picks up the order and send to you from Indiana, if you’re in the US.

Relentlessly running a 72 100w superlead dimed into it did it. Perhaps the owner had the vents covered a little and was restricting airflow. Who knows.

I've repaired a couple of PS100's, ended up communicating directly with Steve. Quick, detailed and of course he diagnosed the issue straight away making it super easy to complete the repair.

Objectively, the new transformers are probably fine. The guy that took delivery of the modded amp hasn't stopped raving to me about how much he loves it. However I think it's more complex. The issue for Marshall is that gear purchases are an emotional buy, and becuase of history and tradition...

The 2023 1959HW’s that I’ve had verified to me were still using the Dagnall laydown PT, but VN made OT and choke. The 2203x I had on the bench was doing a low 420v plate voltage with its VN made PT. Its only a matter of time before Marshall use up the remaining laydown PT stock for the...

Fine. Once I hit the PT with a hammer to get rid of the 1KHz ring.

Marshall make their own in their factory in Vietnam, I know this for a fact. Straight from the horses mouth. Nik gets his from here, http://www.promitheusaudio.com/transformers.html

Definitely not the same as Nik’s.

Explained here at t=4:53 V/M is only applicable with Ch2 and Ch3