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ECC83-TK Vacuum Tube, Matched Pair

Tubes

Dual-triode preamp vacuum tube pair, matched performance, high gain, low noise, cryogenic treatment, clean headroom

$250.00 CAD
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Description

This matched pair of ECC83/12AX7 dual-triode vacuum tubes is designed for musicians, audio engineers, and hi-fi enthusiasts using compatible input and inter-stage amplification equipment. Its high-gain, low-noise characteristics suit guitar amplifiers, effects, compressors, microphones, and other tube audio devices.

The two tubes are selected for closely aligned performance, supporting consistent operation in applications that use multiple ECC83 or 12AX7 tubes. Cryogenic treatment, extensive burn-in, and testing for gain, transconductance, noise, and microphonics provide added stability, while the tonal response offers defined lows, a rich midrange, smooth highs, and clean headroom before overdrive.

Features

Matched Pair
Both tubes are selected for closely aligned performance in compatible audio equipment.

High Gain and Low Noise
Suitable for input and inter-stage amplification where strong signal gain and controlled noise are important.

Balanced Tonal Response
Provides defined lows, a rich midrange, and clean, smooth highs across the frequency range.

Clean Headroom
Allows cleaner headroom than higher-gain 12AX7 designs before transitioning into overdrive.

Harmonic Overdrive
Produces rich even-order harmonic distortion when driven into overdrive.

Extensive Testing
Each tube is measured for gain, transconductance, noise, and microphonics, then burned in and remeasured for stability.

Cryogenic Treatment
Each tube undergoes cryogenic processing as part of the production and quality-control process.

Specifications

General Specifications
Product Type: Preamp vacuum tubes
Tube Type: ECC83 / 12AX7
Configuration: Matched pair
Internal Structure: Dual triode
Base: Noval
Pin Count: 9

Heater Requirements
Parallel Heater Voltage: 6.3 V
Parallel Heater Current: 300 mA
Series Heater Voltage: 12.6 V
Series Heater Current: 150 mA

Typical Electrical Characteristics
Amplification Factor: 100
Plate Voltage: 250 V
Grid Voltage: -2 V
Plate Current: 1.2 mA
Transconductance: 1.6 mA/V
Internal Plate Resistance: 62.5 kΩ

Processing and Testing
Treatment: Cryogenic
Stabilization: Extended burn-in
Test Parameters: Gain, transconductance, noise, microphonics

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