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6080 / 6AS7 / 5998 / 421A

Scroll down to view the 6080, 6AS7G, 5998, and 421A tubes we have in stock now. Although they were not originally intended for audio use, these dual triode power tubes have become popular with OTL amplifiers (such as the Bottlehead headphone amps and Atma-Sphere). In addition to our regular test process, the tubes listed here have been screened for excessive noise and microphonics in our OTL headphone amplifiers.

OTL Headphone Amps

Displaying products 1 - 5 of 5 results
GE JAN-6080WC
GE JAN-6080WC
Price: $29.00
GE JAN-6080WC
This military spec GE 6080 dual triode power tube is a ruggedized 6AS7G tube type. It has black plates, dual halo getters, and a metal collar base. The green print on the glass reads "GE JAN-6080WC." Tube tests as new with low noise.
RCA 6AS7G - black plates, mil spec
RCA 6AS7G - black plates, mil spec
Price: $47.00
RCA 6AS7G - black plates, mil spec
This 1950s RCA 6AS7G dual triode power tube has black plates and a top getter. The silver print on the base has the RCA logo and reads "JAN-CRC-6AS7G." Tube tests as new with low noise.
RCA 6AS7G
RCA 6AS7G - gray plates
Price: $39.00
RCA 6AS7G - gray plates
This 1962 RCA 6AS7G is a dual triode power tube has gray plates and a top O getter. The red print on the base has the RCA logo. Tube tests as new with balanced sections and very low noise.
Thomas-CSF 6080WA - black plates
Thomson-CSF 6080WA - black plates
Price: $24.00
Thomson-CSF 6080WA - black plates
This military spec 6080WA dual triode power tube was made in France. It has black plates, top O getters, and a metal collar base. The silver print on the glass has the Thomson-CSF logo and reads "6080WA Made in France." Tube tests as new with low noise.
Tung-Sol 5998 - black plates
Price: $179.00
Tung-Sol 5998 - black plates
This military spec 1956 Tung-Sol 5998 is an uprated 6AS7G/6080 dual triode tube type. It has black "domino" plates and a top mica with 3 spacers. The Tung-Sol logo is printed on the base and reads "JAN-CTL-5998." Tube tests as new with very low noise.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.

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