This rare vintage tube is an 00A triode labeled "Champion." Its globe bottle is completely enveloped in flashing and it has an engraved black base.
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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.
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The RCA Radiotron UX-201A tubes in this precisely matched pair are antique power triodes. Their globe bottles are completely enveloped in flashing and they have engraved black bases. Both tubes test and are matched for current draw and transconductance.
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Price: $74.00
Sale Price: $59.20
You Save: $14.80 (20 %)
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.
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This precisely matched pair of RCA CRC 2A3 triodes is a wonderful find! These tubes come with their original boxes, but the boxes are in rough shape.
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The Tung-Sol 2A3 tubes in this very rare premium matched pair have dual black plates and bottom getters. Both tubes test as new and are matched within 4% for transconductance (Gm). They come in their original boxes.
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This Sylvania 24A radio frequency tube tests as new and comes in its original box.
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The Arcturus 127 tubes in this precisely matched pair are antique 5-pin triodes that are compatible with any 27 tube type. They have engraved bases and blue globe bottles with lots of chrome flashing. Click "more info" for current availability.
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The 27 tubes in this precisely matched pair are antique triodes made by Sylvania for Zenith. They have ST bottles, black plates, bottom getters, and matching 1946 date codes. Both tubes test as new with very low noise and ship in their original boxes.
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The 1963 Amperex PQ 5842 tubes in this precisely matched pair are premium quality 417A triode tubes made famous by Western Electric. Both tubes test as new and are matched for both transconductance and current draw.
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The Raytheon 5755 tubes in this precisely matched pair are the military spec equivalent to the Western Electric 420A dual triode. They have smooth gray plates and clear tops. Both tubes test as new and are matched for both current draw and Gm.
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Price: From $69.00 to $74.00
This 1959 Western Electric JW 5755 tube is a military spec 420A dual triode. It has smooth gray plates and a windmill getter. Tube tests as new with very low noise and ships in its original box.
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The 1959 Western Electric JW 5755 tubes in this precisely matched pair are the military spec equivalent to the 420A dual triode. They have smooth gray plates and windmill getters. Both tubes test as new and are matched for both transconductance and mA.
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The National Union 45 triode tubes in this precisely matched pair have ST bottles, black plates, and bottom dish getters. Both tubes test good and are matched for both current draw (20.5 mA & 20.5 mA) and transconductance (75% Gm & 80% Gm).
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The Philco 45 triode tubes in this precisely matched pair have ST bottles and engraved bases. Both tubes test as new and are matched for both current draw (34.2 mA & 36.0 mA) and transconductance (108% Gm & 112% Gm).
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The 1940s Raytheon 45 triode tubes in this premium matched pair have ST bottles, black plates, and bottom dish getters. Both tubes test as new and they are matched for both current draw (37.0 mA & 39.8 mA) and transconductance (115% Gm & 120% Gm).
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The Sylvania VT-52 tubes in this very rare matched pair have bottom getters and single black plates with ceramic supports. They come in their original boxes. Both tubes test as new and are matched within 2% for transconductance (Gm).
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This gorgeous 56 vintage 5-pin triode by Arcturus has a blue globe bottle and engraved black base in outstanding condition. I've listened to this tube in a 300B SET amplifier and verified that it is not microphonic and it does not hum.
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The 1930s RCA 56 tubes in this precisely matched pair are vintage 5-pin triodes with the early globe bottles. Their black bases are engraved with the RCA Radiotron logo. Both tubes test as new and are precisely matched for both current draw (mA) and Gm.
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Price: From $39.00 to $59.00
The military spec RCA 56 tubes in this precisely matched pair are vintage 5-pin triodes. They have black plates and bottom getters. The silver print on their black bases reads U.S. Navy CRC 56. Click "more info" for current availability.
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Price: From $29.00 to $57.00
The Sylvania 56 tubes in this matched pair are vintage 5-pin triodes. They have black plates and bottom getters. Their black bases have green print with the early Sylvania leaf logo. Both tubes test as new and are precisely matched.
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This is a beautiful Arcturus 57 radio tube with a blue ST bottle.
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This RCA 5Z3 rectifier tube has smooth black plates and the early "Nipper" dog and phonograph logo (see photos). Flashing shows light use, but tube tests as new with precisely matched sections.
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This 1950s Sylvania 6E5 magic eye tube tuning level indicator has a green phosphor element. The green print on the base reads "JAN CHS 6E5." Tube tests as new / very bright.
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The Cunningham CX 371-A tubes in this precisely matched pair are antique 4-pin 71A triode power tubes. They have globe bottles, nickel plates, and engraved black bases. Both tubes test good and are matched for both current draw and transconductance.
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The Sylvania 71A tubes in this premium matched pair are 4-pin triode power tubes. They have ST bottles and black bases with the green Sylvania logo. Both tubes test as new and are matched for both transconductance (Gm) and current draw (mA).
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This 1940s 717A was made for Western Electric by Raytheon. It has a metal base (base has some oxidation--see photo). Tube tests as new and comes in the original box.
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This 1940s military spec 717A was made for Western Electric by Raytheon. Its metal base has black lettering that reads JAN-CRP-717A VT-269. There is some oxidation on the base. Tube tests as new and comes in the original box.
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This 1940s military spec 717A pentode was made for Western Electric by Tung-Sol. The glass has heavy chrome flashing and is labeled Tung-Sol WE 717A. It also has a metal base, which may have some oxidation. Tube tests as new.
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The 80 is the vintage 4-pin predecessor to the 5Y3 rectifier tube. This rare tubular envelope version by GE has a bottom D getter and round black plates. The full black base has red or white lettering. Tube tests as new.
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