The Telefunken ECC802S is a special quality 10,000+ hour 12AU7. Many have argued this is the best 12AU7 ever made. It has very low noise with extraordinary hi-end resolution and smooth mids.

If there was a Holy Grail of 12AU7's, this is it. The indisputable 12AU7 reference tube.

Genuine NOS with the engraved diamond at the bottom of each tube. Individually tested with Amplitrex tube tester.

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