Telefunken ECC82-TK Black Diamond Series 9Pin Triode Amplifier Vacuum Tube 12AU7(Telefunken Elektroakustik Ecc82 Tk Black Diamond Series 9pin Triode Amplifier Vacuum Tube 12au7)

TELEFUNKEN Elektroakustik ECC82-TK Black Diamond Series 9Pin Triode Amplifier Vacuum Tube 12AU7

The TELEFUNKEN Elektroakustik ECC82-TK is a newly manufactured and cryogenically treated rendition of the classic ECC82, commonly known by the American designation 12AU7.

The ECC82 is a dual triode vacuum tube with medium gain and low noise characteristics, making it ideal for hi-fi audio equipment and instrument amplification. Commonly used as a low-noise line amplifier, driver, and phase inverter in push-pull amplifier circuits, it can replace an ECC81/12AX7 for lower gain applications.

The Black Diamond Series ECC82-TK features gold-plated pins and a gold-plated internal grid. The ECC82-TK is often considered more of a brighter tonal character rather than warm, and is characterized by its wide sense of dynamics and exceptionally quiet noise floor. It offers an accurate and focused image with a flat midrange and tight low end. The ECC82-TK is excellent in headphone amplifiers and high-end home audio and phono equipment, among many other applications. The Black Diamond Series ECC82-TK undergoes rigorous quality control and testing to deliver a dependable tube for the most demanding applications.

Technical Specifications

Type
R.F. Dual Triode
Base
Noval
Number of Pins
9-Pin

Parallel Configuration – Pins 9-(4+5)
Parameter – Symbol – Value – Unit
Heater Voltage – Vf – 6.3 – V
Heater Current – If – 300 – mA
Series Configuration – Pins 4-5
Parameter – Symbol – Value – Unit
Heater Voltage – Vf – 12.6 – V
Heater Current – If – 150 – mA
Direct Interelectrode Capacitances (per triode)
Grid to Cathode and Heater – Cg – 1.9 – pF
Plate to Cathode and Heater – Ca – 1.9 – pF
Grid to Plate – Cga – 1.63 – pF
Maximum Ratings – Design Maximum Values
Plate Voltage – Va – 300 – V
Plate Dissipation – Pa – 2.75 – W
Cathode Current – Ik – 20 – mA
Grid Voltage – Vg – -50 – V
Grid Resistor (self bias) – Rg – 1 – Mk ohm
Cathode to Heater Voltage – Vkf – 180 – V
Cathode to Heater Resistance – Rkf – 150 – kk ohm
Typical Operation and Characteristics – Class A, Amplifier
Plate Voltage – Va – 250 – V
Grid Voltage – Vg – -8.5 – V
Plate Current – Ia – 10.5 – mA
Transconductance – gm – 2.2 – mA/V
Internal Plate Resistance (approx.) – ra – 7.7 – k ohm
Amplification Factor – Mu – 17