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2x Telefunken ECC801S (ECC81+) Matching codes in Orig. Boxes ◇ Bottom - Ulm 1963

2x Telefunken ECC801S (ECC81+) Matching codes in Orig. Boxes ◇ Bottom - Ulm 1963

Regular price $394.00 USD
Regular price Sale price $394.00 USD
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Product Summary

The "Crown Jewelry" ECC801S (ECC81+) tube is here! If you've been seeking the reference tube sound then look no further. Designed for high end amplifiers and preamplifiers, Telefunken ECC81 provides high level gain with ultra low noise and are unquestionably the most sought-after vintage tube and treasured by audio professionals and enthusiasts. 

Sound Qualities

Like any other Telefunken tubes, these ECC81's are very pleasant to listen to: liquid, euphonic, with a slightly warmer midrange than many other German tubes, which makes your sound experience smooth and non-fatiguing, and all that happens on a unbelievably realistic holographic sound stage, where everything feels bigger, wider and taller. Sound texture can be felt through infinite levels of details, laying on top of each other, both in depth and in width. So your quest for superb sound clarity can end right here. Lastly, it never gets old to say that no other brand is even close to these when it comes to low noise - Telefunken tubes are "extremely" quiet just as legend has it.

Professional Tube Testing

NO short, leakage or gas. NO noise or microphonics. 

Both tubes tested Super Strong NOS (120%+ nominal mutual conductance) and 100% matched on a reliable and recently calibrated Mercury 2000 tube tester with the following results (mutual conductance in both uMhos and percentage of nominal):

Tube 1: 3,000/3,050 (86%/87%)
Tube 2: 2,750/2,600 (79%/74%)

Good tubes start at 2,000 and new tubes (incl. NOS/NIB) 3,500, and the Mercury 2000's rated mutual conductance (nominal) for new tubes is 3,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, it's actually quite straightforward: mutual conductance directly translates to tube's ability to amplify sound, so the higher these numbers the stronger. 

Appearance & Cosmetic condition

Beside the fantastic sound signature, we treasure this pair also because both tubes are in pristine cosmetic condition and the Berlin date codes on the side are visible on both tubes:

U1103203J (U = Ulm, Germany, 3 = 1963)

And of course the diamond mark on bottom - the symbol of the best sound one can ever find on ECC81's.


This pair of tubes will be packaged in the Original Telefunken tube boxes.
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