For tube rattle I’ve had great luck with the tube dampers from Eurotubes. They’re a bit softer and have a lot more mass than the standard o-ring style type, and seem to be more effective in difficult situations like high-power combos amps.

This the only Amp builder who's awesome enough to put himself out there to help people, answer questions, and really help people.
Thank you Dr.Z
Great amps and a great guy.love you!

It's refreshing to have an amp company owner share information. Thank you.

I love that Dr Z broke the fourth wall and admitted that poor electrical current will make your amp sound like "shit"....LOVE Dr. Z!

Many years ago, I picked up a 1965 Super Reverb.   It sounded awesome.   I used it at a jam session at a friend's house and I couldn't believe how great it sounded.    A few weeks later, I played at an outdoor party.   When I got there, I noticed an extremely long extension cord feeding a stage at the far end of the property.   When I started playing, my amp couldn't keep up with the modern amps on stage.    It had no volume and sounded horrible.    I always figured it was starved for power that day, but I couldn't understand why the other amps weren't affected.     Thank you for this video!    It explains everything.

I have been around vacuum tubes since 1967.
I have recovered a few failing amps for myself and others,  i have noticed the voltage deviations for myself without anyone to explain to me.
But im a trained electronics tech (afl-cio).
I recommend that users of vacuum tubes pay
Close attention to anything dr. Z had to say.
Seriously.  This was all true, clearly stated,
And in the interest of sharing.
Thank you sir.
Lbk

5 minutes to discharge before pulling out and doing it by hand, story of my wife

my trick is play my amp unplugged

I just learned more in 15 minutes than I’ve ever known about tube amps and I have played tube amps for over 40 years. Thank you Dr. Z! Someday I will own one of your combo’s. 👍

I performed this mod on my own JETTA combo.  What a difference! Before tube rattle was noticeable on any ringing E note, even with dampers on the tubes alone.  Now with the new retainers it is quiet as a church mouse.  Only took me about 10 minutes to get this done and less than $10 in parts.  Loved the amp before, love it even more now.   DR Z's customer support is unmatched in this industry as far as I am concerned.

Your a really fantastic PERSON. Not thinking about yourself, or money or your business,. You truly care about what is going on in the world and your tips and tricks are helping people like me. I own a studio and several tube amps, Preamps and the like. I have been nervous as of late but you quality fixes has helped me a lot, so thank you. At this time we need to pray for Ukraine and the world, but posts like this go a long way to show your love of music, and I applaud you for it. My next amp purchase is a Dr Z, I put my money where my heart is!!! Or really, where your heart is.

This may be the best video on YouTube

What a brilliant video. This guy makes me want to binge watch all his content! Knowledgeable and passionate and has that genuine care for musos and gear. I couldn’t help but think that if Dr Z swore in his videos he’d sound like Lewis Black. 😉

I realize that I'm way late to the game, but man, these videos that Dr. Z has put out are pure gold! A wealth of knowledge in laymen's terms, easy to digest for someone with little knowledge into amplification. Thank you Dr. Z.

The Amp Maniac is another good alternative to the brown box. Cheaper too

Thank you for the educational videos as usual! Stay healthy, Mike.. you're a gem in the industry!

Dr. z great to have you guys back sharing more good vibes and solid knowledge.

Thank you for this, Dr. Z. It seems to be something I can easily adopt into my amateur amp building. Also, you have a glow about you in this vid, you seem very happy.

First-time listener and now a subscriber I have never owned a tube amp but this explains a lot of what happened to a buddy of mine if I purchase a tube amp, i probably will look at your inventory first

Cool video, I'm glad to hear someone else talking about the importance of clean power at the right voltages.
I have not only a Brown Box to reduce the voltage for my '67 Deluxe Reverb and my '76 Marshall JMP 2203, but a voltage regulator to stabilize my wall voltage and filter the power as well before it goes to the Brown Box. All this was more to protect the transformers, but the tubes as well.