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Telefunken ECC82-TK/12AU7 Black Diamond Series Vacuum Tubes (Matched Pair)

BH #TEMP2TK12AU7 • MFR #MATCHED PAIR OF ECC82-TK (12AU7)
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Telefunken ECC82-TK/12AU7 Black Diamond Series Vacuum Tubes (Matched Pair)
Key Features
  • Dual Triode Vacuum Tubes
  • Low-Gain Replacement for ECC81/12AX7
  • Ideal for Hi-Fi Gear & Instrument Amps
  • Medium Gain & Low Noise
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.
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Telefunken ECC82-TK Overview

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
UPC: 858513005889

Telefunken ECC82-TK Specs

Tube
Quantity
2 (Matched Pair)
Tube Type
12AU7 / ECC82 Dual Triode
Base Type
9-Pin Noval
Electrical
Heater Requirements
6.3 V / 300 mA (Parallel Configuration)
12.6 V / 150 mA (Series Configuration)
Direct Interelectrode Capacitance
Grid to Cathode & Heater: 1.9 pF
Plate to Cathode & Heater: 1.9 pF
Grid to Plate: 1.63 pF
Maximum Voltage Ratings
Plate: 300 V
Grid: -50 V
Cathode to Heater: 180 V
Typical Operating Voltage
Plate: 250 V
Grid: -8.5 V
Current Rating
Cathode: 20 mA Max
Plate: 10.5 mA Typical
Transconductance
2.2 mA/V
Amplification Factor
17 μ
Resistance
Grid: 1 Megohm Max (Self Bias)
Cathode to Heater: 150 Kilohms Max
Internal Plate: 7.7 Kilohms Typical
Maximum Dissipation
Plate: 2.75 W
Physical
Dimensions
H: 1.9 x W: 0.9" / 48.3 x W: 22.9 mm (Excluding Pins)
H: 2.2 x W: 0.9" / 55.9 x W: 22.9 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"

Telefunken ECC82-TK Reviews

Telefunken in name only

By Eugene
Rated 3 out of 5
Date: 2020-04-05

There is nothing wrong with these tubes, but nothing special, either. The manufacturer is J&J, to whom Telefunken gave over trade name and manufacturing rights. I bought them to replace OEM tubes for a Rogue Audio Sphinx v. 2. The Sphinx amplifier came with tubes from J&J, and tubes branded J&J are less expensive than these.

top notch tubes

By Harry
Rated 5 out of 5
Date: 2019-04-07

I replaced a pair of Mullards with these and the improvement in sound quality was dramatic.  Better definition top to bottom as well as extended highs.  A further benefit,  the Telefunkens are close to broken in as delivered

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