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These Tesla E34L (Special Quality EL34) are NOS with black bases in original Tesla boxes, and are one of the best NOS EL34 values around. Perfect for that old Marshall! Special price of just $119.99 per tube! Matched pair enter qty 2, matched quad enter qty 4. $5 per tube for matching! Get 'em while they last! Tesla black based is considered by alot of guitar players as hardier tube than the brown base version, and the black base could take more plate volts and thus really growled when at high volumes. High volume distortion was more like the Mullard EL34---in Marshall amps.
Branded as Ultron and other brands, the old Tesla (not JJ) made E83CC is an excat copy of the Telefunken ecc803S. Super extended dynamic range and frame grid construction these are an excellent audiophile and guitar amp choice in 12ax7's! Please do not confuse these with the current production JJ tubes. Old production Tesla E83CC are dramatically better and baout the closts you can get to the Telefunken ecc803s without paying $1000 per tube!out of stock
Brown base Tesla E34L. $139.99 each. Reversed engineered Tesla version of the KT77, excellent sound. This is a suitable replacement for any EL34 = 6CA7 POWER PENTODE tube type. Various brands available.