Telefunken EL84-TK Black Diamond Series Vacuum Tubes (Matched Pair)

Telefunken EL84-TK Black Diamond Series Vacuum Tubes (Matched Pair)

Telefunken EL84-TK Black Diamond Series Vacuum Tubes (Matched Pair)

B&H # TEMPEL84TK MFR # MATCHED PAIR OF EL84-TK

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Expected availability: 7-14 business days

Product Highlights

  • Pentode Output Tubes
  • Ideal for Guitar Amps & Hi-Fi Gear
  • Ideal Replacement for EL84/6BQ5
  • Distinctive Chiming & Articulate Sound
  • Delivers up to 17W of Output Power
  • Characteristic "British" Tone
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Configuration: Matched Pair

Matched Pair Single Tube

Special Order

This item is noncancelable and nonreturnable.

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$52.00
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Telefunken MATCHED PAIR OF EL84-TK overview

  • 1Description

This matched pair of Telefunken EL84-TK Black Diamond Series Vacuum Tubes is ideal for use in guitar amplifiers and hi-fi equipment in homes, studios, and live stage applications. For personal enjoyment or commercial recording, they grant a detailed, bell-like chime and clearly distinguished sound. In a smaller footprint than an EL34, these pentode tubes deliver a characteristic "British" tone and up to 17W of output power.

Ideal replacement for any EL84/6BQ5 tube
Thermionic valve of the power pentode type
Great for guitar amplifiers and hi-fi equipment
Originally designed for the output stages of audio frequency amplifiers
Delivers up to 17W while remaining compact
Similar to an EL34 with a lower output power
When overdriven, EL84 power tubes contribute to a distinctive chiming and articulate sound when compared to 6L6 tubes
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
Table of Contents
  • 1Description

Telefunken MATCHED PAIR OF EL84-TK specs

Mechanical
Type R.F. output pentode
Base Noval
Number of Pins 9
Heater Requirements
Voltage 6.3 V
Current 760 mA
Direct Interelectrode Capacitances
Capacitance Grid #1 to Cathode: 10 pF
Plate to All Except Grid #1: 5.1 pF
Grid #1 to Plate: 0.6 pF
Grid #1 to Heater: 0.15 pF
Maximum Ratings
Voltage Plate Voltage: 300 V
Grid #2: 300 V
Grid #1: -100 V
Cathode to Heater Voltage: 100 V
Current Cathode Current: 65 mA
Dissipation Plate Dissipation: 12 W
Grid #2 Dissipation: 2 W
Resistance Grid #1 Resistor (Automatic Bias): 1 MOhm
Grid #1 Resistor (Fixed Bias): 0.3 MOhms
Typical Operation and Characteristics
Voltage Plate Voltage: 250 V
Grid #2 Voltage: 250 V
Grid #1 Voltage: -7.3 V
Grid #1 Driving Voltage (when PO = 50 mW): 0.3 V
Grid #1 Driving Voltage (when PO = 6 W): 4.3 V
Current Plate Current: 48 mA
Grid #2 Current: 5.5 mA
Transconductance 11.3 mA/V
Resistance Cathode Resistor: 135 Ohms
Plate Resistor: 5.2 kOhms
Internal Plate Resistance: 40 kOhms
Output Power 5.7 W @ 10% THD with fixed grid bias
6 W when Ig1 = 0.3 A
Amplification Amplification Factor: 19
Physical Characteristics
Dimensions (H x Diam.) 2.81 x 0.87" / 71.4 x 22.0 mm (excluding pins)
3.06 x 0.87" / 77.8 x 22.0 mm (including pins)
Weight 0.5 oz / 14.2 g

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