Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tubes (Matched Pair)

Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tubes (Matched Pair)

Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tubes (Matched Pair)

Telefunken E88CC-TK/6922 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 Mic Preamps & Phono Stages
  • Medium Gain & Low Noise
  • Clean Headroom, Transparent Tone
  • Precise Imaging, Versatile Dynamics
  • Gold-Plated Pins
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Configuration: Matched Pair

Matched Pair Single Tube

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This item is noncancelable and nonreturnable.

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Telefunken MATCHED PAIR OF E88CC-TK (6922) overview

  • 1Description

This matched pair of Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tubes is ideal for use in microphone preamplifiers and phono stages in homes, studios, and live stage applications. For personal enjoyment or commercial recording, they grant accurate imaging and versatile, expressive dynamics. Offering medium gain and low noise, these dual triode tubes deliver clean headroom and transparent tone critical to achieving sonically tight input stages. The E88CC-TK/6922 features gold-plated pins for enhanced signal integrity.

Newly manufactured and cryogenically treated to resurrect the transparent tone and harmonic impact of historical Siemens and Telefunken tubes
Great for microphone preamplifiers, phono stages, and sonically tight audio input sections
Also known as the 6922, the E88CC was originally targeted for test equipment and radar, but now serves audiophiles, musicians, and audio engineers
Designed to offer precise imaging, significant dynamics, and a full-bodied soundstage
Medium gain and low noise characteristics
Dual-triode like the 12AX7 tube, but with a different pin configuration (not a direct plug-in replacement)
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
Table of Contents
  • 1Description

Telefunken MATCHED PAIR OF E88CC-TK (6922) specs

Type R.F. dual triode
Base Noval
Number of Pins 9
Heater Requirements
Voltage 6.3 V
Current 365 mA
Direct Interelectrode Capacitances
Capacitance Grid to Cathode and Heater: 3.1 pF
Plate to Cathode and Heater: 0.18 pF
Grid to Plate: 1.4 pF
Maximum Ratings
Voltage Plate Voltage: 550 V in cold conditions
Plate Voltage: 400 V at 0 mA plate current
Plate Voltage: 220 V
Plate Voltage: 250 V at <0.8 W plate dissipation
Grid Voltage: -100 V
Cathode Positive to Heater Negative Voltage: 120 V
Cathode Negative to Heater Positive Voltage: 60 V
Current Cathode Current: 20 mA
Dissipation Plate Dissipation: 1.5 W
Grid Dissipation: 30 mW
Resistance Cathode to Heater Resistance: 20 kOhms
Typical Operation and Characteristics
Voltage Plate Voltage: 90 V
Grid Voltage: -1.3 V
Current Plate Current: 15 mA
Transconductance 12.5 mA/V
Resistance Internal Plate Resistance: 2.6 kOhms
Amplification Amplification Factor: 33
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 0.3 oz / 8.5 g
Packaging Info
Package Weight 0.15 lb
Box Dimensions (LxWxH) 3.0 x 2.0 x 1.0"

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