Amperex

Amperex 6922 E88CC 6DJ8 ECC88 Tubes Matched Pair - Orange Globe - USA 1967 - NOS

$204.00 USD

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Perfect matched & balanced pair of vintage Amperex 6922(E88CC) Orange Globe audio tubes - Strong NOS - Hicksville, New York sound from 1966 - Super Rare

Sound Qualities

What a nice upgrade from from the legendary Orange Globe 6DJ8 tube sound! I have listened to at least 10 variations of Orange Globe tubes and the mid-1960s USA version by far has the most desirable sonics. You get the "textbook" Amperex midrange presentation that is transparent, natural and expansive, with a slight touch of warmth that illuminates your music. Bass is deep and well controlled and the accuracy feels very similar to the high end German E88CC's. The top end is super airy, smooth and nicely extended like one would expect from the best Siemens tubes. Vocals are intimate, sweet and forward (but not right in your face) and that always reminds me how the vocals sound on the best Mullard tubes.

The cherry on top is the "JAN" label these tubes proudly carry - the USA military issue. It's a guarantee of high resolution sound and extremely low noise. Sound separation and clarity on these are superb and on par with the PQ (Premium Quality) tubes - in one sentence: you should hear absolutely nothing but the soul of your music and all of it when you use these tubes. PQ's are flying off the shelves faster than I can restock. So we would recommend these as an excellent alternative if you are seeking the super high end Philips/Amperex sound.

Appearance & cosmetic condition

This pair of Orange Globe's also stand out aesthetically among the vintage tubes. At least 80% of the silkscreen is well preserved. Amperex letters and the Orange Globe logo are perfectly visible. Amperex New York date codes etched on glass are perfectly visible : *7A (* = Hicksville, New York; 7 = 1967; A = January) and *7C (* = Hicksville, New York; 7 = 1967; A = January)

Professional Sound Evaluation

The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring.

- Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC

- Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli

- Output: Focal Clear MG Pro open-back headphones

Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above.

Professional Tube Testing

Both tubes tested strong NOS on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos):

Tube 1: 15,000/15,200

Tube 2: 14,500/14,300

Good tubes start with 7000 and new tubes (incl. NOS/NIB) start around 12,500 - 13,000, and the Mercury 2000's rated Gm for new tubes is 12,500. Test result can also be seen in the pictures.

In case you wonder what all these numbers would mean to your sound experience, it's actually quite straightforward: mutual conductance directly translates to the tube's ability to amplify sound so the higher the numbers the better.

The pair worked wonderfully & sounded terrific in our test amp (Liquid Platinum by Alex Cavalli.) during professional sound evaluation.