The 5692 tubes in this premium matched pair were made by Sylvania and labeled for RCA. They have black plates, medium bottles, and disc getters. Their black bases have red print and matching date codes. Both tubes test as new in box with very low noise.
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This RCA VT-231 is a military spec 6SN7GT. It has a medium bottle with gray glass, staggered black plates, and full black base with white print. Tube tests good.
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This Sylvania VT-231 is a military spec 6SN7GT tube. It has a bottom getter and a full black base. The black t-plates have 2 rivets. This tube is from the 1949-1953 "Bad Boy" era of Sylvania 6SN7 production. Tube tests good with closely matched plates.
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This National Union 6SN7GT was manufactured in 1950. It has a medium bottle with black glass, staggered black plates and a full black base with white print. Tube tests good with matched plates and very low noise.
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Price: Starting at $15.00
This RCA 6SN7GT has a medium bottle with gray glass, staggered black plates, and a full black base with silver print. Choose from tubes that test as new, good, or bargain.
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This RCA 6SN7GT was manufactured in the late 1940s and has the old RCA Victor logo on the base. It has a medium bottle with gray glass, staggered black plates, and full black base with white print. Tube tests good.
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The RCA 6SN7GT tubes in this premium matched pair have medium bottles with clear glass, staggered black plates, and full black bases with silver print. Both tubes test as new and are closely matched.
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Price: Starting at $19.00
This RCA 6SN7GT tube has a medium bottle with clear glass, staggered black plates, and a full black base with silver print. Choose from tubes that test as new, good, or bargains.
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This RCA made 6SN7GT was manufactured in 1952 and labeled for Silvertone. It has a medium bottle, full black base, black glass, and staggered black plates. Tube tests good and is low noise.
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Price: Starting at $18.00
This 6SN7GT tube was manufactured by RCA in the early 1940s. It has a medium bottle, staggered black plates, and full black base with silver label. Choose from tubes that test as new, good, or bargain.
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Price: Starting at $45.00
This Sylvania 6SN7GT dual triode preamp tube has a medium bottle, bottom getter, and full black base with green print. The old style black plates have 2 rivets. Choose from tubes that test as premium new (matched plates) or new.
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These Sylvania 6SN7GT dual triode preamp tubes have medium bottles, bottom getters, and full black bases. The old style black plates have 2 rivets. Both tubes test as new and are sold as a matched pair.
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Price: Starting at $21.00
This Tung-Sol 6SN7GT dual triode preamp tube has distinctive "mouse ear" micas. It also has a gray plates and bottom getter. Choose from tubes that test as new, good, or bargain.
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The mid-1950s Tung-Sol 6SN7GT tubes in this premium matched pair have gray t-plates and bottom getters. Both tubes test as new with very low noise. They are matched to within 2% for transconductance (Gm) and within 9% for emissions (mA).
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Price: Starting at $174.00
This Tung-Sol 6SN7GT tube is one of the most renowned 6SN7s ever made. It was manufactured in 1940s and has a medium bottle with black glass, round black plates, and a full black base.
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This Tung-Sol 6SN7GT was manufactured in 1960. It has a medium bottle, staggered black plates, bottom getter, and a full black base.
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Price: Starting at $22.00
This GE 6SN7GTA dual triode preamplifier tube has a medium bottle and side getter. Choose from tubes that test as new or good.
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The GE 6SN7GTA tubes in this premium matched pair have short bottles, black plates, copper grid posts, and side getters. Their black bases have matching 1951 date codes. They are slightly microphonic when tapped, but test as new and are precisely matched.
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This 6SN7GTA by RCA has a medium bottle, black plates, and the rare dual side getters.
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This 1950s Sylvania 6SN7GTA dual triode preamplifier tube has a medium bottle with clear glass, triangular black plates, and a top getter with lots of chrome flashing. The black base has green print. Tube tests as premium new.
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Price: Starting at $64.00
The 1950s Sylvania 6SN7GTA tubes in this premium matched pair have short bottles, triangular black plates, and top getters with lots of chrome flashing. The black bases have green print with the old lightning Sylvania logo and matching date codes.
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This 6SN7GTA tube was made by Sylvania and labeled for other companies. It has a short bottle, full base, black triangle plates, and heavy chrome flashing. Among the earliest chrome dome types! Tube tests as new.
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The 1955 6SN7GTA tubes in this premium matched pair were made by Sylvania and labeled for Philco. They have tall bottles, triangular black plates, and top getters with lots of chrome flashing. Tubes test new and are very precisely matched.
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This 6SN7GTA was manufactued by Sylvania and labeled for other companies. It has a short bottle, top getter with lots of chrome flashing, and full black base with yellow print. The black t-plates have 3 rivets. Tube tests as new.
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The unusual 6SN7GTB tubes in this premium matched pair were made for Amperex by GE. They have gray plates, side O getters, and full black bases. The orange Amperex globe label is printed on the glass. Both tubes test as new and are closely matched.
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This Raytheon 6SN7GTB has black plates, a top halo getter, and a medium bottle. The black octal base has yellow printing. Tube tests as new.
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This 6SN7GTB by Raytheon has a tall bottle, top halo getter, and gray plates. The black octal base has yellow printing.
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This RCA 6SN7GTB preamp tube has staggered black plates, a side getter, and a short bottle. The full black octal base has red print. Tube tests as new with very low noise.
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This 6SN7GTB by RCA has a medium bottle, bottom getter, and staggered black plates. The full black octal base has silver printing. Tube tests as new with very low noise.
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This Sylvania 6SN7GTB tube has a medium bottle with clear glass, triangular black plates, and a top getter with lots of chrome flashing.
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