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Telefunken ECC83-TK/12AX7 Black Diamond Series Amplifier Tube, Matched Quad
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Telefunken ECC83-TK/12AX7 Black Diamond Series Amplifier Tube, Matched Quad

SKU: TFECC83TKQ
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Telefunken Amplifier Tube Specifications

Mechanical

Mechanical

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  • Type

    R.F. dual triode

  • Base

    Noval

  • Number of Pins

    9

Heater Requirements

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  • Voltage

    Parallel Configuration: 6.3 V
    Series Configuration: 12.6 V

  • Current

    Parallel Configuration: 300 mA
    Series Configuration: 150 mA

Direct Interelectrode Capacitances

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  • Capacitance

    Grid to Cathode and Heater: 1.6 pF
    Plate to Cathode and Heater: 0.33 pF
    Grid to Plate: 1.7 pF

Maximum Ratings

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  • Voltage

    Plate Voltage: 300 V
    Grid Voltage: -50 V
    Cathode to Heater Voltage: 180 V

  • Current

    Cathode Current: 8 mA

  • Dissipation

    Plate Dissipation: 1 W

  • Resistance

    Grid Resistor (self bias): 2.2 MOhms
    Cathode to Heater Resistance: 150 kOhms

Typical Operation and Characteristics

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  • Voltage

    Plate Voltage: 250 V
    Grid Voltage: -2 V

  • Current

    Plate Current: 1.2 mA

  • Transconductance

    1.6 mA/V

  • Resistance

    Internal Plate Resistance: 62.5 kOhms (approximate)

  • Amplification

    Amplification Factor: 100 micro

Physical Characteristics

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  • Dimensions (H x Diam.)

    1.9 x 0.9" (49.2 x 22.0mm) (excluding pins)
    2.2 x 0.9" (55.6 x 22.0mm) (including pins)

  • Weight

    0.2 oz (5.7g)

About Telefunken Amplifier Tube

The TELEFUNKEN ECC83-TK is a well-balanced tube suited for all types of music and playing styles. Designed to allow for cleaner headroom than higher gain 12AX7s when pushed into overdrive, it offers distortion with strongly defined lows, a rich mid range and clean, smooth highs.

Developed by RCA and released in September of 1947, the 12AX7 is a high gain / low noise tube that is the most popular tube used in input / inter-stage audio amplifiers. The dual triode design makes the 12AX7 compact, relatively inexpensive, and produces a high quality full frequency response.

12AX7's are known for their rich even order harmonic distortion when driven into overdrive. Even order harmonics fit into the western musical scale and are more pleasing to the ear than the harsh odd order harmonic distortion created by transistors. The 12AX7 is also known as the ECC83, which was the European designation found on tubes from Phillips / Mullard.

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What's in the box:

  • 4x ECC83-TK/12AX7 Black Diamond Series Amplifier Tube
  • Telefunken 1 Year Parts and Labor Warranty (90 Day + 1 Year Parts and Labor with Registration)