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Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tube

BH #TEE88CCTK • MFR #E88CC-TK (6922) VACUUM TUBE
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Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tube
Key Features
  • Dual Triode Vacuum Tube
  • Ideal for Mic Preamps & Phono Stages
  • Medium Gain & Low Noise
  • Clean Headroom, Transparent Tone
The Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tube is ideal for use in microphone preamplifiers and phono stages in homes, studios, and live stage applications. For personal enjoyment or commercial recording, it grants accurate imaging and versatile, expressive dynamics. Offering medium gain and low noise, this dual triode tube delivers clean headroom and transparent tone critical to achieving sonically tight input stages. The E88CC-TK/6922 features gold-plated pins for enhanced signal integrity.
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Telefunken E88CC-TK Overview

The Telefunken E88CC-TK/6922 Black Diamond Series Vacuum Tube is ideal for use in microphone preamplifiers and phono stages in homes, studios, and live stage applications. For personal enjoyment or commercial recording, it grants accurate imaging and versatile, expressive dynamics. Offering medium gain and low noise, this dual triode tube delivers 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
UPC: 899051002503

Telefunken E88CC-TK Specs

Mechanical
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 µ
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
0.04 lb
Box Dimensions (LxWxH)
3.1 x 1 x 1"

Telefunken E88CC-TK Reviews

Great Tube for Rode K2

By Jeffrey
Rated 5 out of 5
Date: 2022-11-15

I have a Rode K2 for vocals and the stock electro-harmonix tube is a little bit too sharp in the highs, but this new production TF 6922 sounds great after having some burn-in time. After just 8 hours or so it sounds great, 20+ hours it sounds awesome. Not quite the same warmth as some NOS tubes that I've used, but excellent clarity and smoother top end, and importantly, super low noise. Especially at this price, it's a great choice for the K2 and I'm sure it would sound great in the NTK as well.

Amazing for Rode K2

By Yoslan
Rated 5 out of 5
Date: 2020-05-25

Great tube for rode k2

See any errors on this page?

would this be a good replacement for the tube ...

would this be a good replacement for the tube inside my akg perception 820 mic?
Asked by: Karlo
Yes that would be the correct tube for your AKG perception 820. The Telefunken E88CC is the same as a 12AX7 which is the tube recommended by AKG for that mic.
Answered by: John
Date published: 2024-11-10

Is this Telefunken E88CC the same as a 12AX7A ...

Is this Telefunken E88CC the same as a 12AX7A tube?
Asked by: James
No, the pin configuration is different.
Answered by: John
Date published: 2019-05-26

Would the tube work in a Rode NTK? And is this ...

Would the tube work in a Rode NTK? And is this tube manufactured in Germany?
Asked by: David
I personaly bought this for my rode ntK and I love it . Definitely warms the mic up a bit more and rounds off some of those sharp high ends !
Answered by: Marquis
Date published: 2021-07-01
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