EL34, Electro-Harmonix, Matched Vacuum Tube, Apex Matched Quad

Superior "Black base" high-voltage power pentode. Most common power pentode found in British amplifiers such as Marshall, Hiwatt, Laney, and Sound City. The EL34EH defines the classic British rock sound of the 1960s and 1970s. Perfect EL34 for vintage equipment and for improved performance of modern amps. Extremely musical and predictable, with a sound that is rich, smooth, and detailed without being edgy.

• Originally found in vintage British amplifiers such as Marshall, Hiwatt, and others
• Also suitable for HiFi
• 6CA7 equivalent

According to the technical journal, Vacuum Tube Valley, "The Electro-Harmonix EL34EH is balanced throughout the entire music spectrum. Bass goes deep and is tight, mids are sweet and well defined, and highs are detailed and extended."

These tubes are Apex® Matched.

Product Measurements

Heater Voltage: 6.0 V - 6.5 V
Heater Current: 1.5 A
Plate Voltage (Ua): 800 V
Cathode Current (Ik): 150 mA
Plate Dissipation (Wa): 25 W
Screen Voltage: 425 V
Screen Dissipation: 7.5 W
Grid Circuit Resistance (Rg), Fixed Bias: 100 kΩ
Grid Circuit Resistance (Rg), Self Bias: 0.5 MΩ
Capacitance, grid to plate: 1.2 pF
Capacitance, Grid to Cathode: 16 pF
Capacitance, Grid to Heater: 16 pF
Capacitance, Grid to Screen: 16 pF
Capacitance, Grid to Suppressor: 16 pF
Capacitance, Plate to Cathode: 7.2 pF
Capacitance, Plate to Heater: 7.2 pF
Capacitance, Plate to Screen: 7.2 pF
Capacitance, Plate to Suppressor: 7.2 pF
Heater to Cathode Voltage: ± 200 V
Transconductance (S): 11 mA/V
Plate Resistance (Ra): 15 kΩ