Click to enlargeJJ/Telsa E34L/6CA7 Matched Quad

6CA7/E34L Tesla/JJ (Slovakia) nice copy of Mullard. Good for Dyna ST70, Mk4, and English amps that use EL34. Blue or clear glass envelope, depending on availability. The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.


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