Mullard ECC82 / 12AU7 Tubes (Pair) - Gain Matched with "The Fisher" Branding

General:
An excellent pair of robust vintage 12AU7 tubes from Mullard. This set was pulled from a  vintage Fisher Product evidenced by "The Fisher" branding on both individual tubes. 

These tubes are technically used but test above NOS (New Old Stock) specifications on our Amplitrex AT-1000 professional modern tube tester. 

This set features matched date codes BK01 - Blackburn. They are also gain matched, matching on all parameters at 5% or better.

Overall an excellent pair of vintage tubes.

SkyFi Cosmetic Notes:
We're including a set of original Mullard boxes. These boxes show minor shelf wear and have some pen markings.

The tubes themselves are beautiful with almost fully intact lettering. You may desire to clean/treat the pins further before putting them into service.

SkyFi Technical Notes:
Amplitrex AT1000 Test Results:

Test Result Format, Shown as % of NOS spec:
Triode 1 Plate Current / Triode 1 Gm
Triode 2 Plate Current / Triode 2 Gm

Tube 1:
100/100
110/104

Tube 2:
102/100
110/108

Both tubes also tested very good with regards to microphonic performance.

Ownership:
Second Owner

General Sound:
Smooth, uncolored, undistorted natural and clean

Cosmetic Condition:
9/10 = Excellent. Perfect physical condition, gently used. See our detailed rating description here.

Working Condition:
Working perfectly and tested in our lab.

Included:
Just the Unit

Packing:
Will be packed using our highly developed in-house process and custom packing materials.