Mullard ECC88 6DJ8 NOS Matched Pair, Test Strong England, Low Noise

Up for your consideration is a Platinum Matched pair of ECC88/6DJ8 tubes made by Mullard in Blackburn England.

New Old Stock, never used, and test very strong.
These tubes are from OEM bulk pack.

They have the same date codes: B9J3 (made in the 3rd week of October 1969)

I have a few more pairs if you are interested.

Tested on fully calibrated Hickok 539C tester. No Shorts, No Gas, No Leakage.
Low Noise and suitable for phono preamps as well as line/drive stage.

Matched within 7%.

Paypal add 3.5%.

I guarantee excellent performance, so buy with confidence.
If you are not satisfied with my tubes for any reason, just let me know and simply return the tubes for full refund. (Buyer pays for return shipping)

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Gm Test:
Triode Section 1: 13900
Triode Section 2: 13000
Triode Section 1: 13500
Triode Section 2: 13300

Where minimum good is 7750 and spec for new is 12500

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

First Class Mail shipping within US with tracking is $4.50.
USPS International First Class Mail is $14 ($10 to Canada).

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.

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.