Amperex 7308 PQ D-Getter 1960 Platinum Matched Pair, NOS Mint, New in Box, Made in USA, Gold Pin Low Noise Phono Grade

Up for your consideration is a beautiful matched pair of NEW and NEVER USED WHITE LABEL Amperex 7308/E188CC PQ vacuum tubes with gold pins.

From my personal collection.

This pair comes from a sleeve of 5 and packed in military box, so these tubes are special selection for critical military applications. These has been stored for over 60 years and even have soft paper wrapper for the tubes.

Made in 1960.
Highly sought-after early D-Getter version.
Similar to legendary Pinched Waist Amperex 6922 tubes in sound and construction (without the pinch of course)

You may never find these 1960 D-Getter 7308 PQ tubes especially in NOS (New in Original Box) ones.

These sought-after White Label PQ 7308's have exactly the same date codes: VR0*0K,
which indicates both tubes are made in November 1960.
Same sand blasted number on tubes is 049 (49th week of 1960)
Same Painted date code is 61-44 (packed date: 44th week of 1960)

So this pair is identical down to all etched, painted lettering and, of course, construction.

Many consider Amperex 7308 tubes the best of the best in 6DJ8 family tubes.
Rated to have 10,000 hours useful life!

Platinum matched within 4%!
Very Low Noise (phono grade)!
Guaranteed!

I have 3 more of these wonderful sounding tubes, so please ask if you need more than one pair.

Paypal add 3.5%.

I guarantee excellent performance, so buy with confidence.
If you are not satisfied with my tubes for any reason, I will issue full refund for your purchase price.
(Buyer pays for return shipping)

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Shorts, Gas: passed

Noise Test: passed with excellent noise and microphonic characteristics

Gm Test:
Tube #1 Triode Section 1: 13500
Tube #1 Triode Section 2: 13900
Tube #2 Triode Section 1: 13300
Tube #2 Triode Section 2: 13900

Where minimum good is 7000 and spec for new is 12500

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Excellent performance guaranteed, so buy with confidence (full refund if not satisfied).

Priority Mail shipping within US with insurance is $10.
International shipping will be by USPS Priority mail.

All tubes are tested by Hickok 539C vacuum tube tester. This tester was precision calibrated by Roger Kennedy to improve measurement accuracy. 83 and 5Y3 tubes were replaced by Solid State rectifiers to minimize calibration drift in the tester.

All tubes are installed into an actual audio circuit to screen them for internal tube noise/micorphonics. This is especially important with the 6DJ8/6922/7308 tubes. Excessively noisy or/and microphonic tube issues would make them unsuitable for usage in a phono stage or in high-gain line stage preamps. Basic tube testers don’t reveal such noise issues, and even top tier test equipment most likely does not reveal “in circuit”/real world tube noise issues with the 6DJ8/6922/7308 tubes.

Music Reference RM-4 pre-preamp (moving coil head amp with 30 db gain) is used for "in circuit"/real world noise/microphonic testing. This unit uses two 6DJ8/6922/7308 vacuum tubes. Each channel uses both triode sections making it ideal tool for noise/microphonic testing of both triode sections.