Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tubes (Matched Pair)

Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tubes (Matched Pair)

Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tubes (Matched Pair)


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Expected availability: 7-14 business days

Product Highlights

  • Dual-Triode Vacuum Tubes
  • Ideal for Input & Inter-Stage Amplifiers
  • High Gain & Low Noise
  • Clean Headroom, Rich Harmonic Distortion
  • Well Balanced, Full Frequency Response
  • Smooth Highs, Rich Mids, Strong Lows
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Configuration: Matched Pair

Matched Pair Single Tube

This item is noncancelable and nonreturnable.

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Telefunken MATCHED PAIR OF ECC83-TK (12AX7) overview

  • 1Description

This matched pair of Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tubes is ideal for use in input and inter-stage audio amplifiers in homes, studios, and live stage applications. From stompboxes and guitar amps to compressors and microphones, 12AX7 tubes are widely used for their even-order harmonic distortion and full frequency range. Offering high gain and low noise, these dual-triode tubes deliver extended headroom and balanced tone complementary to an array of musical genres. The ECC83-TK/12AX7 is characterized by its clean highs, thick midrange, and prominent bass.

Newly manufactured and cryogenically treated rendition of the classic ECC83 dual triode vacuum tube, commonly known by the American designation 12AX7
Great for input and inter-stage audio amplifiers used in all types of music and playing styles
Designed to allow cleaner headroom than higher gain 12AX7s when pushed into overdrive
Strongly defined lows, a rich midrange, and clean, smooth highs
High gain and low noise characteristics
Rich even-order harmonic distortion when driven into overdrive
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: 858513005896
Table of Contents
  • 1Description

Telefunken MATCHED PAIR OF ECC83-TK (12AX7) specs

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: 1.6 pF
Plate to Cathode and Heater: 0.33 pF
Grid to Plate: 1.7 pF
Maximum Ratings
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
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
Physical Characteristics
Dimensions (H x Diam.) 1.9 x 0.9" / 49.2 x 22.0 mm (excluding pins)
2.2 x 0.9" / 55.6 x 22.0 mm (including pins)
Weight 0.2 oz / 5.7 g
Packaging Info
Package Weight 0.04 lb
Box Dimensions (LxWxH) 3.0 x 1.0 x 1.0"

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