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GE 6550 / 6550A - premium matched quad
GE 6550 / 6550A - premium matched quad
Price: $449.00
GE 6550 / 6550A - premium matched quad
The late 1970s GE 6550A power tubes in this premium matched quad have gray plates, 3 getters, metal collar bases and 188-5 factory code (Owensboro, Ky). Tubes test as new and are precisely matched for both mA and Gm. While supplies last!
GE 6L6GC - premium matched pair
GE 6L6GC - premium matched pair
Price: $126.00
GE 6L6GC - premium matched pair
The GE 6L6GC power tubes in this premium matched pair have gray plates, dual side getters, and black bases. They also have matching date codes and the 188-5 factory code (Owensboro, Ky). Tubes test as new and are precisely matched.
Genalex Gold Lion 300B / PX300B reissue - premium matched
Genalex Gold Lion 300B / PX300B reissue - precision matched
Price: $162.00
Sale Price: $121.50
You Save: $40.50 (25 %)
Genalex Gold Lion 300B / PX300B reissue - precision matched
In the Genalex / Marconi-Osram tradition of providing the highest quality triode tubes like the PX4 and PX25 of the 1930s, New Sensor has released the Genalex Gold Lion PX300B power triode. Price includes extended burn-in and precision matching.
on sale
Shuguang 211 - premium matched
Shuguang 211 - precision matched
Price: $74.00
Sale Price: $55.50
You Save: $18.50 (25 %)
Shuguang 211 - precision matched
This Shuguang 211 tube is a directly heated power triode with a carbon anode capable of up to 40 watts in single ended operation. Price includes extended burn-in and precision matching.
on sale
Genalex GEC 12AT7 / A2900 - black plates, matched pair
Genalex GEC 12AT7 / A2900 - black plates, matched pair
Price: $394.00
Sale Price: $344.00
You Save: $50.00 (13 %)
Genalex GEC 12AT7 / A2900 - black plates, matched pair
The 1978 GEC A2900 tubes in this matched pair are a premium quality Genalex 12AT7 tube type. They were made in England by the Marconi-Osram Valve Company (MOV). Click "more info" for test results.
on sale
Marconi 5871 / 6V6GT - matched pair
Marconi 5871 / 6V6GT - matched pair
Price: $109.00
Marconi 5871 / 6V6GT - matched pair
The 1950s Marconi 5871 tubes in this precisely matched pair are a low noise 6V6 tube type. They have black plates and gray glass. Their brown bases have red print with the Marconi logo and read "made in Canada." Both tubes test as new.
Mullard GZ34 / 5AR4 - Bugle Boy label, 4 notch plates
Mullard GZ34 / 5AR4 - 4 notch plates, Bugle Boy label
Price: $149.00
Mullard GZ34 / 5AR4 - 4 notch plates, Bugle Boy label
This 1964 Mullard GZ34 / 5AR4 rectifier tube was made in Great Britain (f32 series) and has the Amperex Bugle Boy label. It has a short bottle and 4-notch plates. The Blackburn factory code is etched in the glass. Tube tests as new.
RT EF86 / 6267 - premium matched pair, mesh plates
RT EF86 / 6267 - mesh plates, matched pair
Price: $152.00
RT EF86 / 6267 - mesh plates, matched pair
The 1961 RT EF86 tubes in this matched pair have mesh plates and halo getters. The white label has the Tung-Sol logo and the Chartes, France factory code is etched in the glass. Both tubes test as new with very low noise and are precisely matched.
Telefunken ECC82 / 12AU7 - premium matched pair, smooth plates
Telefunken 12AU7 / ECC82 - smooth plates, matched pair
Price: $194.00
Telefunken 12AU7 / ECC82 - smooth plates, matched pair
The 1963 Telefunken 12AU7 / ECC82 tubes in this precisely matched pair have smooth plates and halo getters. The diamond imprint is stamped in the base of each tube. Both tubes test as new with very low noise and are matched for both Gm and mA.
Sonotone 7025 / 12AX7 - clear top
Sonotone 7025 / 12AX7 - clear top
Price: From $69.00 to $79.00
Sonotone 7025 / 12AX7 - clear top
This rare 1960 Sonotone 7025 is a low noise 12AX7 / ECC83 tube type. It has gray plates, a side D getter, and a clear top. Tube tests as new with very low noise. Click "more info" for current availability.
Telefunken 6922 / E88CC - gold pins, matched pair
Telefunken 6922 / E88CC - gold pins, matched pair
Price: From $394.00 to $424.00
Telefunken 6922 / E88CC - gold pins, matched pair
The 1968 Telefunken E88CC tubes in this precision matched pair are premium quality 6DJ8 / 6922 type tubes. They have gold pins, gray risers, halo getters, and matched date codes. Phono grade pairs. Click "more info" for current availability.
Western Electric 300B - 1954 date code
Western Electric 300B - 1954 date code
Price: $1,200.00
Western Electric 300B - 1954 date code
This 1954 Western Electric 300B has a bottom D getter and yellow print on the base. Tube tests as new with 61.8 mA for current draw (103%) and 4740 Gm for transconductance (86%). Flashing, pins, base all in good condition (see photos).
Sylvania 7308 / 6DJ8 - RCA label
Sylvania 7308 / 6DJ8 - RCA label, matched pair
Price: $129.00
Sylvania 7308 / 6DJ8 - RCA label, matched pair
The 1970s Sylvania 7308 tubes in this precisely matched pair are a premium quality 6DJ8 / ECC88 tube type. They have red RCA labels and matched date codes. Both tubes test as new and are precisely matched for both current draw (mA) and Gm.
RCA 2A3 triode - matched pair
RCA 2A3 triode - matched pair
Price: From $289.00 to $294.00
RCA 2A3 triode - matched pair
The 1940s RCA 2A3 tubes in this precisely matched pair have black double plates, bottom dish getters, and matched date codes (X3). The silver print on the base has the RCA Radiotron logo and matched date codes (X3). See product options for test results.

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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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