Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...
Philips 7316 Matched Pair (12AU7)...

Philips 7316 Matched Pair (12AU7) Beckman Instruments special grade tube (ultra rare!)

NOS in a white box. Ultra-rare low noise 12AU7 tubes. These are super low noise tubes with medical-grade/aircraft equipment grade and were only sold to companies. These are the large halo getter 1959 date-coded originals from Holland. These 7136 tubes are among the rarest ever by Philips from the Heerlen factory. These tubes were the Philips answer to the Telefunken ECC802s and the Mullard 10M series.
First series Ct1 of the new Large-halo getter construction that came after the famous D-getter variant. Printed with white Beckman label.

TO ORDER:
please check the test reports in the picture list on the left,
pick your two tube numbers, and mention these in the command section on the order form.
Still available: 1,3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17

€500.00

 
Date code
Ct1 ∆9E
Factory
Heerlen, Holland
Year of Manufacturing
1959
Generation
1st
General availability
Extremely Rare
Condition
New old stock (NOS)
Label markings
Good (some little scratches)
Getter
Large Halo getter
Match for pair
within 5% Match
Tested with
Amplitrex AT-1000
test method
auto bias
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