Factory description: Gold plated control grid for improved fidelity. Special plate alloy to improve plate dissipation.
Beskrivning från Eurotubes:
Our observation: Everyone here at Eurotubes took a step back when we first auditioned the new JJ 6550! Most 6550's and especially new production tubes are pretty sterile sounding so our benchmark was to A/B the JJ 6550 against some of our NOS GE, RCA, Sylvania and Coke bottle Amperex 6550's. Most of the time JJ Electronic tubes will hold their own with NOS equivalents or even surpass them but in the case of the JJ 6550 these are hands down the best 6550 we have ever heard. They are very warm with a great clean tone and the breakup raw, crunchy and gritty. If you want an Angus - AC/DC type tone then these tubes really deliver! they are simply a lot of fun to play.
The JJ 6550 will not make as much power as the JJ KT88 and the KT88 is thicker sounding, in fact some players feel it's too thick, so if you want a fatter sounding tube than a 6L6 that breaks up earlier than a KT88 then the JJ 6550 may be just right.