Upgrade your gear with this high quality, Slovakian made replacement tube set from JJ Electronic. This set includes (1) JJ EL34 Matched Quad, (5) JJ 12AX7/ECC83S and (1) Balanced JJ 12AX7/ECC83S (phase inverter) all brand new in their original JJ retail boxes.
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Matching: We consider power tubes to match when the Plate Current(Ip) and the Transconductance(Gm) vary less than 5%. We burn-in all power tubes for maximum stability and accuracy during testing. Test results are printed on the box.
Manufactured in the Slovak Republic, these brand new tubes have been fully tested on the industry’s most reliable, voltage controlled testing equipment and exceed all manufacturer’s specifications. They are guaranteed from the manufacturer to be new and free from any defects in materials or craftsmanship and are backed by our 30 day, 100% satisfaction guarantee or your money back.