The Mullard ECC82, known in the U.S. as the 12AU7, is a classic British small-signal dual triode known for its smooth, composed sonic character and long-term reliability. Produced across Mullard’s UK and European factories, these tubes became a staple in hi-fi amplifiers, preamps, and studio equipment where stability and musical balance mattered more than sheer gain. Sonically, the ECC82 is appreciated for its warm, natural midrange and controlled presentation, making it well suited for line stages, driver positions, and circuits that benefit from low noise and good linearity.

Archive Assessed, Apos Assured

All Archive tubes are thoroughly tested, inspected, photographed, and inventoried, guaranteeing the quality of each tube that's shipped to customers. All tubes carry an Apos 12-month warranty against manufacturing defects. 

Are the tubes...dusty...?

Because these are genuine New Old Stock tubes, small cosmetic irregularities may be present. These aren't defects but artifacts of vintage manufacturing and decades of storage. They have no impact on reliability or sonic performance.

Specs

• Brand / Type: Mullard ECC82 / 12AU7 / 12AU7 / 12AU7A / 12AU7WA / ECC802 / ECC802S / E82CC / ECC186 / 5814 / 5814A / 6189 / 6067 / CV4003 / CV491 / M8136 / B329 / 13D5 / A2293
• Getter Type: Top Ring Getter
• Plate Type: Long Black Plate
• Made in: England
• Tested on: Amplitrex AT1000 Advanced Digital Tube Tested