Telefunken ECC82-TK/12AU7 Black Diamond Series Vacuum Tubes (Matched Set of 4)

This set of four matched Telefunken ECC82-TK/12AU7 Black Diamond Series Vacuum Tubes is ideal for use in hi-fi equipment and instrument amplifiers in homes, studios, and live stage applications. Offering medium gain and low noise, these dual triode tubes can also be used to replace ECC81/12AX7 tubes when lower gain is desired. The ECC82-TK/12AU7 is characterized by its brightness, flat midrange, focused low frequencies, and versatile dynamics. It features gold-plated pins and a gold-plated internal grid for enhanced signal integrity.

Newly manufactured and cryogenically treated rendition of the classic ECC82 dual triode vacuum tube, commonly known by the American designation 12AU7

Great for hi-fi equipment, instrument amplifiers, and as a low-noise line amp, driver, and phase inverter in push-pull amplifier circuits

Suitable replacement for an ECC81/12AX7 when lower gain is desired

Medium gain and low noise characteristics

Bright tone with a flat midrange and tight low end

Accurate and focused image with wide dynamics

Each tube is meticulously measured for all critical parameters of performance including transconductance, gain, noise, and microphonics

Tubes are selected by hand, rigorously tested, subjected to an extended burn-in period for stability, and re-measured before final packing