The RCA 5AS4A Vintage Vacuum Rectifier Tube is a sought-after collector’s item in the vintage audio and electronics community. Made in the United States by RCA, this vacuum tube is a true gem for enthusiasts seeking to restore or reproduce the sound of bygone eras. With a strong and matched pair performance, this vintage rectifier tube is sure to enhance the audio quality of any vintage audio setup.
Item Tag: RCA
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RCA 5AS4A Vintage Vacuum Rectifier Tube. Tested strong. Used. Reboxed
It is marked “Made in USA” on the glass. It has dark gray plates and a single ‘D’ shaped getter. I warrant the tube to be as described when you receive it.
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Pair (2) of Vintage RCA USA 5U4GB Vacuum Tubes – TV-7 Tested
This listing is for a Pair (2) of Vintage RCA USA 5U4GB Vacuum Tubes. All have black plates and a top side getter. All are used but test strong on my TV-7. Individual test scores cannot be provided in advance but will be provided with the tubes. Guaranteed good. Returns accepted. No boxes. To be clear, you will receive 2 tubes for the listed price. Thanks!
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1961 RCA 5U4GB Tall Glass Single Mica Rectifier Tube TESTED 5U4 5AS4A
5U4GB/5AS4A Rectifier Tube. Single Mica (at top). Note: There are no markings on this tube except the RCA logo on the glass.
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NOS 5U4GB 5AS4A RCA Legendary Black Plate Rectifier 1963 Strong See Test
I have 2 of these that both test virtually the same with the same date code. This is for 1 tube but you will get a discount to buy both. The product is a vintage RCA 5U4GB rectifier tube from 1963, which is highly sought after due to its strong performance. It has been tested using a sencore mighty mite v tester and is known for its legendary black plate design. This particular tube was manufactured in the United States, adding to its collectability and desirability among vintage audio enthusiasts. Tubebx
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6AK6 6BH6 6X8A 6AS5 6BN4A 6GH8A 12BA6 6CB6A 6CF6 Vintage NOS Tubes (lot of 80)
All tubes are untested, but I’d imagine most should test just fine. Other Tubes and Accessories (eye tubes, Nixie tubes, CRTs, sockets, etc). Yes, it’s that simple! Audio Preamp Tubes (12AX7, 12AY7, 6SN7, 6DJ8, etc).
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RCA 5AS4A Vacuum Tube Tested on TV-7D/U Tube Tester NOS
RCA 5AS4A Vacuum Tube Tested on TV-7D/U Tube Tester NOS
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5AS4A NOS RCA amplifier radio audio rectifier electron vacuum tube tested 5U4GB
Tube has black ribbed plates, clear top, top side rectangular getter.
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Tightly Matched Pair 5AS4A Miniwatt by RCA black plate Tubes Triplett 3444 test
Miniwatt made by RCA. Triplett tests rectifiers under load (the best test) & indicates whether they test correctly or not – no GM on rectifiers. Test results given are from the 1000 scale for comparison.