I had a new one around ‘98/99 and it was fine but not a keeper. I tried it in a store and was enamored with how big and juicy it sounded straight in. Really nothing sounds like it, especially back then. But growing up on Marshall I started to miss the upper mids and top end of a good 6 knobber. Traded it for a plexi half stack. The main difference is in the early 2K’s, Cameron, who was working with them, tweaked the red channel to have more gain. I think they’ve kept that change since then.
I honestly think any year is fine. Just turn the knobs. I do like the class A option on them. Always thought that sounded pretty good.
Curious what Variac setting you would use for that. I’ve never heard that before about the bias.