Russian Mature Tubes -

: Tubes marked with "EV" are the most desirable. This suffix indicates Extended Life (at least 5,000 hours) and Vibration Resistance .

Massive power triodes used in high-end "Single Ended Triode" (SET) amps. Go to product viewer dialog for this item. russian mature tubes

) have different heater wiring than their Western counterparts (12AX7). Always check the data sheet before plugging them in. : Tubes marked with "EV" are the most desirable

When shopping for these vintage components, look for specific markings on the glass: russian mature tubes