If my really quick look is correct, it looks like you can remove the valves and jumper pin 2 (control grid) to pin 3 (cathode) and get a much lower power, halfway decent headphone amp.
Can anyone confirm that method to bypass the tubes?
It would lower the power by a lot?
I wish another video was done on this amp about bypassing the tubes.
This amp gets criticism for the tubes not doing much, but if bypassing the tubes doesn't lower the power output, it's a lot of power for the price, and bypassing the tubes means no need to buy replacement tubes when the stock ones wear out. And it gets rid of the tube distortion, of course.
I have one and like it, but it'd be great to be able to bypass the tubes. If the power output would be the same.