I bought the Tungsol 5881 Matched Pair Soft from Musician's Friend. I have used them for about an hour.

They have too much harmonic content for my liking. They overdrive at about 6 on my Sovtek Mig 50. They have a fuzzy low end and smooth distortion. Very steppenwolf-like distortion.

I am hoping for a matched pair of 5881's, 6L6's, or KT66's with a lot of clean headroom or very mild harmonics. I want a pair with very low mileage. Sovtek 5881/6L6WCG's need not apply (I want to try something new).

You can check out my eBay feedback under brenton85.