RCA FAA Command 5751 Black Plates

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JJ2013
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RCA FAA Command 5751 Black Plates

Post by JJ2013 » Mon Sep 01, 2014 2:18 pm

Hi y'all VooDoo Gurus and AudioPhiles!!

I know that RCA Command series 5751 Black Plates are really sweet-sounding tubes with a rich low end and plenty harmonics and I will be getting some for my next mic pre-amp! Will probably play around with "plain" RCA 5751 Black Plates too.

Now, can anyone tell if the RCA FAA Command Series 5751 Black Plates is any different from one without the "FAA?" Don't know what that designation suggests?

Cheers!!

JJ

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Post by Voodoo Guru » Wed Sep 03, 2014 3:50 am

Howdy JJ,
We have seen RCA 5751 Tubes branded as Command Series, and we have seen RCA 5751 tubes branded as FAA or CAA tubes, but we have not seen them branded with both the Command and FAA designations on the same tube.

The "FAA" designation means "Federal Aviation Administration" made for aircraft use. It was previously "CAA' for "Civil Aviation Authority". "JAN" stands for "Joint Army Navy".

Take Care,
Voodoo Guru
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JJ2013
Voodoo Audiophile
Posts: 141
Joined: Sat Apr 27, 2013 9:16 pm

Post by JJ2013 » Wed Sep 03, 2014 8:04 am

Howdy VooDoo Guru!!

Sure appreciate the response as always :-)

OK on FAA. I guess I didn't automatically associate FAA with the Federal Aviation Administration for some reason ;-)

The seller on eBay write the tubes are "2 Vintage RCA FAA Command 5751 Black Plates Stereo Tubes 1963 strong" and I do see FAA on the tubes in the pix but "Command" or 5751 are not on there.......
Not sure how reliable a source this may be?

There is another seller that is selling "Matched Pair New, NOS RCA 5751 blackplate 5751WA Command Series. Premium broadcast grade 12AX7." $190.00 + $9 for shipping and I can see "Command" and "5751" on tubes.

Cheers,

JJ

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