MATCHED PAIR 6P1P-EV (cyrillic 6П1П-EB) NOS Vacuum Tubes - UPGRADE FOR CHINESE 6P1 and Russian 6П1П VACUUM TUBES. 6P1P-EV vacuum tubes are a vintage miniature 9-pin beam-tetrode. The “-EV” designation at the end of the 6P1P tube code designates a military grade long-life (E) and high-reliability (V) version of the 6P1P tube.
*****PLEASE NOTE: 6P1P-EV (6П1П-EB) tubes are "beam tetrodes" and CAN NOT be used as a replacement other tubes such as 6N1P (6H1П), 6N1P-EB (6H1П-EV), 6N6 or 6N6P (6H6П) tubes. *****AMPLIFIER DAMAGE CAN OCCUR IF YOU SUBSTITUTE THE WRONG TYPE OF TUBE - carefully determine the type of tube used in your amplifier before ordering.
TESTED AND MATCHED by experienced engineers using Amplitrex tube testers to evaluate the electrical parameters of the tubes. Tubes are evaluated for plate current (ip), mutual conductance, heater/cathode leakage, gas and noise. If any deficiencies are found the tubes are not sold. Less than 50% of the 6P1P-EV tubes we test and audition pass our standard for high fidelity audio use and are used in our Platinum Grade sets.
TEST RESULTS CLEARLY MARKED on the tube boxes with data for both ip and Gm attached to the individual tube boxes. The tubes chosen for these matched pairs have close electrical parameter matching (ip and Gm are within 5%). Individual matched pairs will have identical manufacture date codes.
BUY WITH CONFIDENCE - Our Platinum Grade 6P1P-EV vacuum tubes are backed by Riverstone Audio's no-nonsense 2-year warranty - THE BEST WARRANTY AVAILABLE in the audio tube business. We also guarantee that the tubes selected for our Platinum Grade matched pairs test will test at NOS levels when received. To protect the tubes during shipping and storage, the 6P1P-EV tubes are supplied in Riverstone Audio's custom “Tube Cradle” boxes.
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