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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.

chinook9
georgehifi's avatar
georgehifi
10,312 posts
 


As for the best sounding 6550 I’ve listened to, it been NOS Mil Spec Green Label GE plain white box, like these $350usd each!!!!!
https://cdn.shopify.com/s/files/1/0333/7633/products/1_df378355-c1a5-4552-aa85-251a38398fc0_large.jp...
The glass was twice as thick you feel it in the weight and hear it when you flicked them with your finger nail.

Cheers George
vegasears
1,173 posts
 
I switched from SED 6550C Winged "C" to Gold Lion-KT-88's for my VTL amps many years ago.  They are a bit warmer with better bass. I enjoy them so much I've not considered trying another brand of tube.
williampowell
23 posts
 
Also use NOS JAN GE 6550. Winged C 6550 do come up from time to time from US Resellers. 
chinook9 OP
66 posts
 
The SED Winged C 6550 (c I believe) made in St. Petersburg is my favorite tube, but I was unable to find a quad that worked.  I purchased a quad from a US vendor and they each red-plated to one degree or another.  The vendor replaced them, but the second quad did the same thing and I received a full refund.

I gave up on the Winged C and tried a set of Psvane KT88-TII. I like them enough that I am sticking with them, but I would buy a set of Winged C in a heartbeat if I could find a good set.
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