ivan H
Ambassador of Tubes & Grooves
I've seen these Johan videos a few times. I don't consider them to be an actual comparison, for one thing, getting an accurate representation of what is heard "in the room" into a digital YouTube clip is a pretty big ask (like, impossibly big).
Another thing, Johan pretty well always attenuates, we can usually see the attenuator sitting atop the amp head. That right there is a big no-no if you're trying to fairly & honestly compare the sonic quality of tubes, especially power tubes.
Still another thing, as AMS & Sysco have already spoken of,,, completely wrong "kind" of test for comparing power tubes. What I would like to see for a more honest attempt at a comparison is no attenuation at all & then comparative recordings at different levels of drive, clean, on the edge of breakup (where it can be played clean or pushed into overdrive depending on picking dynamics), & then also at a couple of different levels of power tube saturation.
IMHO, done as they are, these type Johan comparisons are nothing more than click bait. Cheers
Another thing, Johan pretty well always attenuates, we can usually see the attenuator sitting atop the amp head. That right there is a big no-no if you're trying to fairly & honestly compare the sonic quality of tubes, especially power tubes.
Still another thing, as AMS & Sysco have already spoken of,,, completely wrong "kind" of test for comparing power tubes. What I would like to see for a more honest attempt at a comparison is no attenuation at all & then comparative recordings at different levels of drive, clean, on the edge of breakup (where it can be played clean or pushed into overdrive depending on picking dynamics), & then also at a couple of different levels of power tube saturation.
IMHO, done as they are, these type Johan comparisons are nothing more than click bait. Cheers
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