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Telefunken ECC82-TK/12AU7 Black Diamond Series Vacuum Tubes (Matched Pair)
EAN: 858513005889
This matched pair of 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
EAN: 858513005889
This matched pair of 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
Telefunken ECC82-TK Specs
Mechanical
| Type | R.F. dual triode |
| Base | Noval |
| Number of Pins | 9 |
Heater Requirements
| Voltage | Parallel Configuration: 6.3 V Series Configuration: 12.6 V |
| Current | Parallel Configuration: 300 mA Series Configuration: 150 mA |
Direct Interelectrode Capacitances
| Capacitance | Grid to Cathode and Heater: 1.9 pF Plate to Cathode and Heater: 1.9 pF Grid to Plate: 1.63 pF |
Maximum Ratings
| Voltage | Plate Voltage: 300 V Grid Voltage: -50 V Cathode to Heater Voltage: 180 V |
| Current | Cathode Current: 20 mA |
| Dissipation | Plate Dissipation: 2.75 W |
| Resistance | Grid Resistor (self bias): 1 MOhm Cathode to Heater Resistance: 150 kOhms |
Typical Operation and Characteristics
| Voltage | Plate Voltage: 250 V Grid Voltage: -8.5 V |
| Current | Plate Current: 10.5 mA |
| Transconductance | 2.2 mA/V |
| Resistance | Internal Plate Resistance: 7.7 kOhms (approximate) |
| Amplification | Amplification Factor: 17 µ |
Physical Characteristics
| Dimensions (H x Diam.) | 1.9 x 0.9" / 49 x 22 mm (excluding pins) 2.2 x 0.9" / 56 x 22 mm (including pins) |
| Weight | 0.4 oz / 11.3 g |
Packaging Info
| Package Weight | 0.05 lb |
| Box Dimensions (LxWxH) | 3 x 1.1 x 1" |
In the Box
- Telefunken ECC82-TK/12AU7 Black Diamond Series Vacuum Tubes (Matched Pair)
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Most positive
Jessica
Wednesday, 19 April 2023
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I replaced a pair of Mullards with these and the improvement in sound quality was dramatic. Better definition top to ...
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Greg
Friday, 19 May 2023
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There is nothing wrong with these tubes, but nothing special, either. The manufacturer is J&J, to whom Telefunken gave over ...
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Greg
Friday, 19 May 2023
Comment
There is nothing wrong with these tubes, but nothing special, either. The manufacturer is J&J, to whom Telefunken gave over ...
Jessica
Wednesday, 19 April 2023
Comment
I replaced a pair of Mullards with these and the improvement in sound quality was dramatic. Better definition top to ...
