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National Union 56 triode - matched pair
 National Union 56 triode - matched pair National Union 56 triode - matched pair |
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2 matched pairs in stock
Item Number: 1072
Manufacturer: National Union
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The 1940s National Union 56 tubes in this precisely matched pair are vintage 5-pin triodes. The white print on the base has the National Union logo.
Both tubes test as new and are precisely matched for both current draw (mA) and transconductance (Gm). They ship in their original boxes.
These tubes are sold as a matched pair. Photo is of a sample pair from the lot. |
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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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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The 1947 Tung-Sol 56 tubes in this precisely matched pair are vintage 5-pin triodes. The white print on the base has the Tung-Sol label with matched date codes. Both tubes test as new and are precisely matched for both current draw (mA) and Gm.
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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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