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5751 tubes

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GE 5751 / 12AX7 - gray plates
GE 5751 / 12AX7 - gray plates
Price: $44.00
GE 5751 / 12AX7 - gray plates
This military spec GE 5751 tube has gray plates and a halo getter. The green label has the GE logo and reads "JAN-5751." The glass is etched with the part number and a triangle to indicate special quality. Tube tests as new with low noise.
GE 5751 / 12AX7 - gray plates, matched pair
GE 5751 / 12AX7 - gray plates, matched pair
Price: $94.00
GE 5751 / 12AX7 - gray plates, matched pair
The military spec GE 5751 tubes in this precisely matched pair have gray plates and halo getters. The green label has the GE logo and reads "JAN-5751." The glass is etched with a triangle to indicate special quality. Both tubes test as new with low noise.
GE 5751 / 12AX7 - gray plates, matched pair
GE 5751 / 12AX7 - gray plates, matched pair, Amperex label
Price: $94.00
GE 5751 / 12AX7 - gray plates, matched pair, Amperex label
The GE 5751 tubes in this precisely matched pair have gray plates and halo getters. The white label has the Amperex globe logo. The glass is etched with a triangle to indicate special quality. Both tubes test as new with low noise.
GE JAN 5751 / 12AX7 - gray plates, triple mica, support rods
GE 5751 / 12AX7 - gray plates, triple mica
Price: From $20.00 to $54.00
GE 5751 / 12AX7 - gray plates, triple mica
This early 1960s military spec GE 5751 tube is a lower gain 12AX7 equivalent. It has gray plates, triple micas, and a halo getter. The white print on the tube has the GE logo and reads "JG-5751." Click "more info" for current availability.
GE 5751 / 12AX7 - triple mica, matched pair
GE 5751 / 12AX7 - gray plates, triple mica, matched pair
Price: $129.00
GE 5751 / 12AX7 - gray plates, triple mica, matched pair
The early 1960s military spec GE 5751 tubes in this precisely matched pair are lower gain 12AX7 type tubes. They have gray plates, triple micas, and extra support rods. The white label has the GE logo and reads "JG-5751." Both tubes test as new.
RCA Command Series 5751 / 12AX7 - black plates
RCA 5751 / 12AX7 - black plates, Command Series
Price: $79.00
RCA 5751 / 12AX7 - black plates, Command Series
This rare 1968 RCA 5751 tube is a lower gain 12AX7 equivalent. It has black plates, extra support rods, and a halo getter with copper support post. The red print on the glass has the broadcast quality RCA Command Series logo. Tube tests as new.
RCA 5751 / 12AX7 - black plates, halo getter
RCA 5751 / 12AX7 - black plates, halo getter
Price: $54.00
RCA 5751 / 12AX7 - black plates, halo getter
This 1960s RCA 5751 tube is a lower gain 12AX7 equivalent. It has black plates and a halo getter. The red print on the glass has the RCA logo (may be partial/missing). Tube tests as new with balanced sections and very low noise.
RCA Command Series 5751 / 12AX7 - matched pair
RCA 5751 / 12AX7 - Command Series, matched pair
Price: $164.00
RCA 5751 / 12AX7 - Command Series, matched pair
The rare 1966-68 RCA Command Series 5751 tubes in this precisely matched pair are lower gain 12AX7 equivalents. They have black plates and halo getters. The red label has the broadcast quality RCA Command Series logo. Both tubes test as new.
RCA JRC 5751 / 12AX7 - black plates, halo getter
RCA JRC 5751 / 12AX7 - black plates, halo getter
Price: $59.00
RCA JRC 5751 / 12AX7 - black plates, halo getter
This 1960s RCA 5751 tube is a military spec, lower gain 12AX7 equivalent. It has black plates, thick micas, and a halo getter with copper support post. The red print on the glass reads "JRC-5751" (partial). Tube tests as new with balanced sections.
Siemens 5751 / 12AX7 - triple mica
Siemens 5751 / 12AX7 - triple mica
Price: $82.00
Siemens 5751 / 12AX7 - triple mica
This unusual 1960s Siemens 5751 tube is a lower gain 12AX7 equivalent. It has gray plates, a halo getter, and triple micas. The white label on the glass is missing. Tube tests as new with balanced sections and low noise.
Sylvania JAN 5751 / 12AX7 - gray plates
Sylvania JAN 5751 / 12AX7 - gray plates, halo getter
Price: $44.00
Sylvania JAN 5751 / 12AX7 - gray plates, halo getter
This military spec Sylvania 5751 tube is a lower gain equivalent for the 12AX7. It has gray plates with copper grid posts and a halo or disc getter. The green or blue print on the glass reads "Philips ECG JAN 5751." Tube tests as new with low noise.
Sylvania JAN 5751 / 12AX7 - matched pair
Sylvania JAN 5751 / 12AX7 - matched pair
Price: $89.00
Sylvania JAN 5751 / 12AX7 - matched pair
The military spec Sylvania 5751 tubes in this precisely matched pair have gray plates with copper grid posts and halo or disc getters. The green or blue labels read "PhilipsECG JAN 5751." Tubes test as new with low noise.
Tung-Sol 5751 / 12AX7 - gray plates, halo getter
Tung-Sol 5751 / 12AX7 - long gray plates
Price: $64.00
Tung-Sol 5751 / 12AX7 - long gray plates
This 1962-64 military spec Tung-Sol 5751 tube is a lower gain 12AX7 equivalent. It has long gray plates and a halo getter. The white print on the glass has the Tung-Sol logo (partial) and reads "JTL-5751WA." Tube tests as new with balanced sections.
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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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