FWIW I read somewhere that the reissue Gold Lion KT88's had a similar tone. My SED6550's are still working so I haven't tried them (yet?). Also, as an alternative in another amp to the SED 6550's I've been using Tungsol 6550's. The are a tad warmer than the SED's in that amp. The Tungsols are probably less linear than the SED's but they are rugged and not at all expensive (compared to NOS SED 6550, or anything else made by SED for that matter.)
Replacement for SED 6550C Winged C
I am now using SED 6550C winged C from 2008. I really love the tone texture of these tubes.
I am having some trouble with my set (4) of these tubes and would like to get a replacement, however I am not finding the exact replacement, made in St. Petersburg, at a reasonable price from a trustworthy dealer. I could get a set from Russia but I prefer to try domestically first.
Consequently, I am asking if any of you, having experience with this tube, if you know of another tube that has such tone and texture. I focus primarily on vocals.
I am having some trouble with my set (4) of these tubes and would like to get a replacement, however I am not finding the exact replacement, made in St. Petersburg, at a reasonable price from a trustworthy dealer. I could get a set from Russia but I prefer to try domestically first.
Consequently, I am asking if any of you, having experience with this tube, if you know of another tube that has such tone and texture. I focus primarily on vocals.