Description
Offered is a pair of Tung Sol 5881 Beam Power Tetrode Tubes. Each tests good on the Jackson dynamic tester with % transconductance readings of 105% and 108% (good range is from 70% to 130%). The tubes show no shorts, gas or inter-electrode leakage. Smooth Grey Plates and top getters with all good silver flashing. Production codes are as follows: 3225734-3 and 3225806-3, likely late 1950's. Similar to 6L6WGB and all the other 6L6 tubes as well. Great for music amps. Pick up these two for your own best gear. Mouse over the photo images to zoom in. NO RESERVE!! Thanks for looking.