6SN7 / 5692 types

This 1958 CBS 5692 tube is a military spec 6SN7 tube. It has a short bottle, dual top getters, and black plates. This tube's triple mica and 11 support rods contribute to its long life and low noise. Tube tests as new with balanced sections and low noise.

This GE 5692 tube is a premium quality 6SN7 tube. It has a short bottle, dual top getters, and a black base. This tube's triple mica and 11 support rods contribute to its long life and low noise. Tests as new with balanced sections and very low noise.

This RCA 5692 is an industrial grade 6SN7 tube type--and an audiophile favorite. It has a short bottle, red base, and dual top getters. The triple mica and 11 support rods give it long life and low noise. Click "more info" for current availability.

The early 1960s GE 6SN7GTB tubes in this precisely matched pair have medium bottles, parallel gray plates, and side getters. The black bases have white or red print with the GE logo. Click "more info" for current availability.

This military spec Philips JAN 6SN7WGTA tube has a medium bottle, disc getter, and Sylvania-style black plates. The black base has green print with the PhilipsECG logo. Tube tests as new with balanced sections and very low noise.

The military spec Philips JAN 6SN7WGTA tubes in this precisely matched pair were made in the USA. They have medium bottles, disc getters, and Sylvania-style black plates. Both tubes test as new and are matched for current draw (mA) and Gm.

This early 1950s RCA 6SN7GT has a medium bottle with gray glass, staggered black plates, and a bottom getter. The silver print on the base has the RCA logo. Tube tests as new with balanced sections.

The 1950s RCA 6SN7GTA tubes in this precisely matched pair have short bottles, staggered black plates, and side D getters. The black bases have silver print with the RCA logo. Both tubes test as new with balanced sections.

This 1950s-1960s RCA 6SN7GTB tube has a medium bottle, bottom D getter, and staggered black plates with copper grid posts. The black base has silver or red print with the RCA logo. Tube tests as new with very low noise.

This rare 1940s RCA VT-231 is a military spec 6SN7GT. It has a medium bottle with gray glass and staggered black plates. The silver print on the base has the RCA logo and reads "JAN-CRC-6SN7-GT VT-231." Tube tests as new.

This 1949 Sylvania 6SN7GT tube has the same structure as the military spec VT-231 from the 1949-1953 "Bad Boy" era of Sylvania 6SN7 production. It has a medium bottle, bottom getter, and early black plates with 2 rivets. Tube tests as new.

This early 1950s Sylvania 6SN7GT / 6SN7GTA tube has a short bottle, early black plates, and lots of chrome flashing. The full black base has green print with the Sylvania lightening logo. Click "more info" for current availability.

The 1960s Sylvania 6SN7GTB tubes in this precisely matched pair have medium bottles, black plates, and lots of chrome flashing. They are matched for both current draw (mA) and transconductance (Gm). Click "more info" for current availability.

The 1960s Sylvania 6SN7GTB tubes in this precisely matched pair have tall bottles, black plates, and lots of chrome flashing. Both tubes test as new and are matched for both current draw (mA) and Gm. Click "more info" for current availability.

This 1960s Sylvania 6SN7GTB tube has a medium bottle, black plates, and a halo getter with lots of chrome flashing. The black base has yellow print with the Sylvania logo. Tube tests as new.