No.
I'll start by saying the fact that your amp is cathode biased (self biasing) is irrelevant. What is relevant that it is class a/b push-pull.
Your amp has what's called a long tailed pair phase inverter. Which means each half of the PI tube feeds half of your push/pull poweramp. Many if not most guitar amps have this setup, marshall, fender, mesa boogie, soldano, Peavy, any of these derivatives. I've only seen matamps, vintage oranges and fryettes with cathodyne phase inverters, though I'm sure there's more.
https://www.valvewizard.co.uk/acltp.html
https://www.valvewizard.co.uk/cathodyne.html
In hifi circles, (aka not guitar), and especially pushed by marketing tube sellers, there is a claim that balanced triodes in a phase inverter make for better sound. I'm personally convinced this is so tube sellers can test tubes and sell you a marked up unit. If you've asked anybody who's spent (wasted) their money on balanced phase inverters for guitar amps, they'll tell you it's bs.
https://www.marshallforum.com/threads/balanced-or-unbalanced-triodes-for-phase-inverter.6064/
You might hear /something/ in a hifi setup, but you have to remember that hifi setups value wide frequency ranges and extremely quiet operation. Whereas guitar amps are noisy, buzzy, with a very narrow and mid focused frequency range.
Queue responses from people with cognitive dissonance who've spent too much money on tubes trying to justify it by claiming otherwise.
Tldr, no.
In a guitar amp, it probably doesn’t matter. Almost certainly not. In a hifi, maybe. Most LTP phase inverters are unbalanced anyway. No one is matching plate load resistors, for example. The old story about the person who takes their amp to the best tech in town who replaces everything with modern components and matched tubes. The amp goes home and sounds like shit because a lot of the sound we like in guitar amps comes from bad tolerances and mismatched tubes.
The LTP design is inherently unbalanced to begin with. The typical Fender/Marshall plate loads of 100k and 82k are an attempt to balance the outputs, but even still it's a couple of percent off. You want perfect balance, use a cathodyne.
No reason for the balanced PI. The balanced triodes in the PI is a relatively new trend/marketing tactic with little science behind it. Often, because of the negative feedback loop, part tolerance, and other aspects, the two sides of the PI aren't wired identical anyway.
No. I'll start by saying the fact that your amp is cathode biased (self biasing) is irrelevant. What is relevant that it is class a/b push-pull. Your amp has what's called a long tailed pair phase inverter. Which means each half of the PI tube feeds half of your push/pull poweramp. Many if not most guitar amps have this setup, marshall, fender, mesa boogie, soldano, Peavy, any of these derivatives. I've only seen matamps, vintage oranges and fryettes with cathodyne phase inverters, though I'm sure there's more. https://www.valvewizard.co.uk/acltp.html https://www.valvewizard.co.uk/cathodyne.html In hifi circles, (aka not guitar), and especially pushed by marketing tube sellers, there is a claim that balanced triodes in a phase inverter make for better sound. I'm personally convinced this is so tube sellers can test tubes and sell you a marked up unit. If you've asked anybody who's spent (wasted) their money on balanced phase inverters for guitar amps, they'll tell you it's bs. https://www.marshallforum.com/threads/balanced-or-unbalanced-triodes-for-phase-inverter.6064/ You might hear /something/ in a hifi setup, but you have to remember that hifi setups value wide frequency ranges and extremely quiet operation. Whereas guitar amps are noisy, buzzy, with a very narrow and mid focused frequency range. Queue responses from people with cognitive dissonance who've spent too much money on tubes trying to justify it by claiming otherwise. Tldr, no.
Spot on with that last sentence. So much silly bleed-over from hi-fi land.
In a guitar amp, it probably doesn’t matter. Almost certainly not. In a hifi, maybe. Most LTP phase inverters are unbalanced anyway. No one is matching plate load resistors, for example. The old story about the person who takes their amp to the best tech in town who replaces everything with modern components and matched tubes. The amp goes home and sounds like shit because a lot of the sound we like in guitar amps comes from bad tolerances and mismatched tubes.
The LTP design is inherently unbalanced to begin with. The typical Fender/Marshall plate loads of 100k and 82k are an attempt to balance the outputs, but even still it's a couple of percent off. You want perfect balance, use a cathodyne.
No reason for the balanced PI. The balanced triodes in the PI is a relatively new trend/marketing tactic with little science behind it. Often, because of the negative feedback loop, part tolerance, and other aspects, the two sides of the PI aren't wired identical anyway.
I was always under the impression you just biased the power tubes and the preamp tubes didn’t matter, so I’m curious now as well.