Tung-Sol 6550 Original Issue Tubes, Matched Pair, Tested, NOS

Hello – I have a matched pair of Original Issue Tung-Sol 6550 tubes for sale.

Although marked GE and RCA,  these was made by Tung-Sol.

These tubes have gray plates, dual side halo getters and a halo getter at the top of the tube. The tubes have 1964 date codes.

Hickok 539C test results: 9800/105 mA and 9250/98 mA. Minimum is 6250.

All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice – prior to the listing and prior to shipping.

Please check out my other ad’s on Audiogon.

If you don’t see the tubes you are looking for, please contact me.

Be sure and click on the “other items’ link for more tubes.

I will ship international.

Shipping is $5 in the USA. Canadian shipping is $16.00 and international shipping by first class is $20.00.

Your tubes will be carefully packed.

No charge for paypal.

Please check my feedback and buy with confidence.