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 remeasured before final packing
EAN: 858513005896
Telefunken MATCHED PAIR OF ECC83-TK (12AX7) 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: 1.6 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 µ |
Physical Characteristics
| Dimensions (H x Diam.) | 1.9 x 0.9" / 49.2 x 22 mm (Excluding Pins) 2.2 x 0.9" / 55.6 x 22 mm (Including Pins) |
| Weight | 0.2 oz / 5.7 g |
Packaging Info
| Package Weight | 0.04 lb |
| Box Dimensions (LxWxH) | 3 x 1 x 1" |
In the Box
- Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tubes (Matched Pair)
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