Hoping someone can advise.
The valve on the very left of my AI S500 (as you look at it from the front) is hardly glowing at all. It still sounds normal but I've ordered a matched pair of EL34s in any case.
Assuming I have to replace the non-glowing valve, which other valve should I replace ?
The valve on the very left of my AI S500 (as you look at it from the front) is hardly glowing at all. It still sounds normal but I've ordered a matched pair of EL34s in any case.
Assuming I have to replace the non-glowing valve, which other valve should I replace ?