These pre-war Yugoslavian tubes are used in the Music Reference RM-10 and are the most reliable EL84s we have found. They also perform great in other amplifiers. The tube is pumped out to such a high vacuum that they will work at plate voltages up to 720 volts.

6BQ5/EL84 - NOS Yugo/Ei 6BQ5 - EI$55.00
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