6AK5

Miniature 7-pin high-transconductance sharp-cutoff pentode developed for low-noise radar receiver front ends and ultra-high frequency wideband amplifiers up to 400 MHz. Equivalents: 5654, 6AK5W, EF95, CV850, 6Ж1П. Real-Life Examples: WWII airborne radar intermediate frequency units, vintage Gibson BR-9 guitar amplifiers, military tactical transceivers.