I've Waited Years To Try This

The exact difference at double the power is 3dB, by mathematical definition. 3dB is considered a noticeable difference by most listeners, but isn't perceived as twice as loud by human hearing. (I'm an electrical engineer)

I love the "Holy Grail" attitude to 100w Marshalls these days. When I started playing on the Isle of Wight in the '70s, that (or similar) was the basic expected rig for most of the successful local bands - with full, not half stacks of speakers. I was still in my high school band when we were booked to open a local festival, and the headliners invited us out to their rehearsal space ahead of time to play through the rig we'd have on the day. It was basically a barn in the middle of nowhere packed to the rafters with Marshall 100w stacks. Dauntingly loud (and it highlighted every cock-up) - but absolute heaven! All these years later, I've never found anything to match the pure visceral power of that experience.

I just did the Marshall Factory Tour in Milton Keynes, UK some days ago. They put a lot of pride in their amps. Even the non-HW-stuff. All these people at Marshall were so nice to us. I really feel proud to use their products after seeing, how they are made :)

Oh I would take the Friedman in a heartbeat. Everything I have ever had the opportunity to play from Friedman just sounds incredible.

Gotta say, the 100watt Marshall sounded way more open and mid forward. The 50watt sounded great too, but compared to the Marshall it sounded shrill and scooped in the mids to my ear

Man, the tones you are pulling out of both amps are incredible.

I have a 1984 JCM 800 2204 50 watt half stack. To me its the holy grail of amps, and the main amp I use in my studio.

100 just has that sparkle.

According to Tom Bukovac, you're absolutely correct about the 100 w amp's clean character. In his rig rundown with Bollinger (which i'm sure you've watched & loved), though he was discussing his 100 w Marshall Super Bass (with the tranny mod he mentioned) - not the same Marshall, but the same aspect of clean HR AND the beauty of the cleans, which he said would rival any Fender clean one could ever want. Your decibel-meter display really helped to bring that point home. This is a very interesting video, and presented in your typical lucid, informative, unbiased way. Good work Rhett.

Nice head-to-head (ha!) comparison.

Hats off for you Rhett, I barely created any video, but by my experience as class facilitator, your videos always hits home. Clear framework explained at first and its breakdown, section by section video parts, and then conclusion at the end. Just similar to how a training would be delivered in a class. Great work, man.

"Weight: 33.5 lbs." Oh man, I can probably pick it up, entering the giveaway ...

I am 77 and played in original material only for all these years and have since 71, I always prefered a Marshall JMP 50. Yes I had to sell them between bands and from jumping back and forth over the pond for airfare, lol. So I have had 3 over the years. I got lucky they are all a shade different but all were great. I did use a 100 watt half stack in early 71 but it was too, too loud. The 50 is bang on perfect. That said in the last few years I had use an attinuator in small clubs as DB police were on to me, lol. I am gretful for your excelent demo of Daves. It really seems the way to go as my amp may soon be forced to retire.

The best Demo video of all time. Love how you walked through every detail. Excellent room ambience too! Great work on this Rhett!

As others have stated, the difference between 50w and 100w is 3db's. However, the watt/DBs relationship is not linear, or at least the perceived difference isn't. A 3bd increase from 80dbs is very little. Whereas a 3db increase when you're already at say 120dbs is huge. For the most part, when you get to higher wattage amps, what you're really getting is more headroom, not more volume

I bought a 100 Watt Vintage Modern almost 20 years ago thinking I needed something that large. One of the silliest decisions I've ever made. I'll never sell it though. Thank goodness for reactive load attenuators.

I wasn’t expecting to like the 100w Marshall more, but I do.

That SG sounds glorious.

Loved that Robin Trower-esque bit at the start. Now I gotta go listen to Bridge Of Sighs...

I’ve never been disappointed with any Friedman I’ve had the opportunity to play. Even 50 watts is a lot of power.