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Re: Audible Differences: EL34 vs 6550

You can also greatly affect the sound with the brands of EL34, 6550, KT88, and KT90 you use. Most posters like NOS versions of the above (except for the KT90, which is a current Ei production tube). I tend to find the EL34 leaner, higher in clarity and detail, more quick and transparent. The 6550 family sounds fuller, richer, with more bass weight, dynamics, and a bigger soundstage to me. I also like the current production versions of the 6550/KT88/KT90 better.



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