1959 GE 6SN7GTB ECC33 Tubes, Matched Pair, NOS/NIB, Tested, Matched Codes

1959 GE 6SN7GTB ECC33 Tubes, Matched Pair, NOS/NIB, Tested, Matched Codes

These tubes have gray ladder plates and halo getters. They have matching 1959 date codes.

These were tested on my Dan Nelson calibrated TV-7B. They have been tested for shorts, gas, and transconductance. The tubes test with readings of 100/92 and 95/98. Minimum is 50.

They have been sonically tested in my homebuilt pre-amp and are dead quiet with no microphonics.

Tubes are described, tested, and presented to the best of my ability, subject to the limitations of the equipment that I have available (Hickok 539C and several TV-7’s). Test results are likely to vary some between your equipment and mine due to the imprecise nature of 60-year-old consumer-grade test equipment.

About me. I have over 62 years of experience in many facets of electronics design and repair. I have been working with tubes since I was 12 years old. I am an active ham radio operator and have been for 62 years. I’m a retired electrical engineer with 30 years in the Semiconductor industry. I’ve been collecting, buying, and selling tubes and other tube based equipment since the 1980s, and have been a Reverb seller since 2020. The pictures you see are of the actual tube(s) you’ll receive. 

I will ship international.

Don't see the tubes you are looking for? Contact me and I may be able to help you.