"Having hundreds of volts surge through your body, is a shite way to die." I couldn't stop laughing.

You provide such great information without any bullshit. No hacky jokes, the video isn’t 4 days long. No fat, just facts. Love it, and thank you.

I can already hear the news: "Young musician dies from electrocution after following internet tutorial on how to replace valves"

As a former Naval radar tech, I cannot strongly enough thank you for your words of caution. Voltages inside a tube (valve) amplifier are FATAL and must be approached with an appropriate level of caution. Cheers, Sir!

My gf keeps watching your videos with me. Normally she’s never interested in these type of videos. Hmm....?

"loss of volume, a thin sound and unusual audio artifacts".  Wow, I hadn't realised how well I'd been achieving that valve-amp-sound using my solid state amp.  As they say, its all in the fingers :)

I find it hilarious how it really is appropriate for his tone of voice and choice of words here. He get's that people will be foolish and get into things they don't understand regardless of the risk because of their natural curiousness and lust for tonal reward. So it really is best to highlight the most dangerous elements of the job so that when they inevitably do start poking around inside, they'll at the very least understand a bit of what not to do.

I am one of those "qualified risk takers"-I never thought of it that way, but he's right!

These are the videos that I sub to this channel for. Informative, well-produced, and featuring a dashingly good-looking and charming electronics technician.

I used to work in a fairly large UK music shop chain, and the number of times one particular old school engineer electrocuted himself (obviously not critically) working on valve amps was mental! - we used to call him electric Bob.

The oil left on the valves after touching them, and then being turned on can cause the oils to "bake" into the glass and cause a hazy look. It's just aesthetic and doesn't affect lifespan or tone. So, wipe them if you care about the valves looking nice.

4:34 love the belly shot.

Probably worth mentioning that many lunchbox amps like that Tiny Terror do not require biasing. Generally speaking, most amps under 50w are cothode biased, so don't need to be rebiased when swapping tubes.

Mesa is also a good exception to the rule with their confusingly named "fixed bias," which is different from what is traditionally called fixed bias. They don't require adjustment, but do require you to use tubes that meet tight specifications.

"Wake up! It's time to diiiiiiiie!"
First lyric of "Welcome to the Valves".

And if you do get it wrong, and survive, holy shit its an experience you won't forget! Seriously people, if you don't know just leave it alone.

Vintage Marshall and Fender amps didn't bother with matched pairs/quads of power tubes.  On one hand, the tubes were of higher quality, and there was less variation, but on the other hand, a certain amount of mismatch produces uneven push/pull operation, resulting in increased even-order harmonics, which, all things being equal, will sound better to most people than a perfectly symmetrical signal.

This made up my mind about not buying a valve amp. Thanks!

I don’t even have a tube amp, I just came to hear you talk. Love your show Colin. Stay sexy

Finally, someone with the balls to explain the amp bias process so I understand and why I should my sausages out of the freaking wires.  Well done and I will not be putting my hand near it.

SOOO glad you brought up the "ONE HANDED" rule....very good on you brotha... it could save someones life...Great timing.... For those who have never changed out the Power tubes, remember, its best to re-bias when you change them. As a rule, most of us who have been doing this awhile, insist, its a must when you change power tubes...theres alot at stake if they arent biased right...I just got my set of power and preamp tubes for my Marshall JCM 800 2204 in the mail yesterday. Its time for a change up. ( In fact, I think almost ALL my vintage amps, 11 of them... are VERY well overdo...) I tend to stick with the new Mullards, I also have a bunch of Tung Sol....I might check out those you have as well....I'm also doing a filter cap change as well on the Marshall....and my first attempt at changing out the V1 socket. Its very loose and might be giving me false microphonics...Great vis as usual Colin.