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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 - 9 of 9 results
GE 6080 - black plates
GE 6080 - black plates
Price: $34.00
GE 6080 - black plates
This GE 6080 dual triode power tube is a ruggedized 6AS7G tube type. It has black plates, top getters, and a metal collar base. The white print on the glass has the GE logo and the GE dot pattern is etched in the glass. Tube tests as new with low noise.
GE 6AS7GA - black plates
GE 6AS7GA - black plates
Price: $39.00
GE 6AS7GA - black plates
This 1961 GE 6AS7GA tube has black plates and a top getter. The red print on the base has the GE logo. Tube tests as new with low noise.
GE JAN 6080 - black plates
GE JAN 6080 - black plates
Price: $39.00
GE JAN 6080 - black plates
This GE 6080 dual triode power tube is a ruggedized 6AS7G tube type. It has black plates, top getters, and a metal collar base. The green print on the glass reads "GE JAN-6080WC." Tube tests as new with low noise.
GE JAN-6080WC - matched pair
GE JAN 6080WC - matched pair
Price: $89.00
GE JAN 6080WC - matched pair
The military spec GE 6080 dual triode power tubes in this precisely matched pair have black plates, dual halo getters, and a metal collar bases. The green print on the glass reads "GE JAN-6080WC." Both tubes test as new with low noise.
Raytheon CK-6080WA - black plates
Raytheon CK-6080WA - black plates
Price: $39.00
Raytheon CK-6080WA - black plates
This 1960s military spec Raytheon 6080 tube has black plates, top getters, and a metal collar base. The black print on the glass has the Raytheon logo and reads "CK-6080WA." Tube tests as new with low noise.
RCA 6080 - gray plates
RCA 6080 - gray plates
Price: $34.00
RCA 6080 - gray plates
This 1960s RCA 6080 dual triode power tube is a ruggedized 6AS7G tube type. It has gray plates and a metal collar base. The red or black print on the base has the RCA logo. Tube tests as new with very low noise.
RCA 6AS7G - gray plates
RCA 6AS7G - gray plates
Price: $49.00
RCA 6AS7G - gray plates
This 1960s RCA 6AS7G is a dual triode power tube has gray plates and a top getter. The red print on the base has the RCA logo. Tube tests as new with low noise.
Vintage Svetlana
Vintage Svetlana "Winged C" 6AS7G / 6H13C
Price: $49.00
Vintage Svetlana "Winged C" 6AS7G / 6H13C
This vintage Svetlana "Winged C" 6H13C dual triode power tube is a Russian 6AS7G tube type popular in OTL and headphone amplifiers. It has black plates and dual bottom getters with lots of flashing. Tube tests as new with very low noise.
Vintage Svetlana
Vintage Svetlana "Winged C" 6AS7G / 6H13C - matched pair
Price: $109.00
Vintage Svetlana "Winged C" 6AS7G / 6H13C - matched pair
This vintage Svetlana 6H13C dual triode power tubes in this precisely matched pair are Russian 6AS7G tube types popular in OTL and headphone amplifiers. Both tubes test 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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