Tung-Sol "Original"1960's matched 6550 tubesI have a total of 8 These original tubes are early 1960’s Tung-Sol 6550 tubes have been tested on a calibrated Triplett 3444 and Hickok 539C. All tubes have been tested for transconductance, ...165.00

Tung-Sol "Original" 1960's matched 6550 tubes Original 1960/6559 Tungsols [Expired]


no longer for sale

Amended on

I have a total of 8 These original tubes are early 1960�s Tung-Sol 6550 tubes have been tested on a calibrated Triplett 3444 and Hickok 539C. All tubes have been tested for transconductance, plate current, shorts, gas, leakage and life. The "ORIGINAL" Tungsol 6550 tubes are superior in performance to the newer Tung-sol 6550 being made today. Better bass and stunning sound-stage. Paypal 3% Shipping Via FedEx/UPS/USPS I will ship international. US and Canadian shipping is $15.00. Price is per tube

Amended on

I have a total of 8 These original tubes are early 1960’s Tung-Sol 6550 tubes have been tested on a calibrated Triplett 3444 and Hickok 539C. All tubes have been tested for transconductance, plate current, shorts, gas, leakage and life. The "ORIGINAL" Tungsol 6550 tubes are superior in performance to the newer Tung-sol 6550 being made today. Better bass and stunning sound-stage. Paypal 3% Shipping Via FedEx/UPS/USPS I will ship international. US and Canadian shipping is $15.00