Vacuum Tube - EL34, Electro-Harmonix

Pictured: Single
Pictured: Single
Pictured: Apex Matched Pair
Pictured: Apex Matched Pair
Pictured: Apex Matched Quad
Pictured: Apex Matched Quad
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Vacuum Tube - EL34, Electro-Harmonix

Starting at: $17.95
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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."

Apex Tube Matching
Matched versions of this tube use Apex Matching
Choose burned-in tubes for maximum stability and performance.
RoHS Compliant
Item ID:
Electro-Harmonix, Apex Matched
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Apex Matched PairT-EL34EH-MP609722124225
Apex Matched QuadT-EL34EH-MQ609722124232
Apex Burned-In Matched PairT-EL34EH-MPB841358101656
Product Measurements
Capacitance, Grid to Cathode16 pF
Capacitance, Grid to Heater16 pF
Capacitance, Grid to Screen16 pF
Capacitance, Grid to Suppressor16 pF
Capacitance, Plate to Cathode7.2 pF
Capacitance, Plate to Heater7.2 pF
Capacitance, Plate to Screen7.2 pF
Capacitance, Plate to Suppressor7.2 pF
Capacitance, grid to plate1.2 pF
Cathode Current (Ik)150 mA
Grid Circuit Resistance (Rg), Fixed Bias100 kΩ
Grid Circuit Resistance (Rg), Self Bias0.5 MΩ
Heater Current1.5 A
Heater Voltage6.0 V - 6.5 V
Heater to Cathode Voltage± 200 V
Plate Dissipation (Wa)25 W
Plate Resistance (Ra)15 kΩ
Plate Voltage (Ua)800 V
Screen Dissipation7.5 W
Screen Voltage425 V
Transconductance (S)11 mA/V
Packaging Information
Packaging DimensionsApex Burned-In Matched Pair version5.1 in. × 3.5 in. × 1.6 in.
Apex Matched Pair version5.1 in. × 3.5 in. × 1.6 in.
Apex Matched Quad version5.1 in. × 3.5 in. × 3.5 in.
Single version1.8 in. × 1.8 in. × 5.1 in.
Weight (Packaging)Apex Burned-In Matched Pair version0.24 lbs.
Apex Matched Pair version0.24 lbs.
Apex Matched Quad version0.48 lbs.
Single version0.12 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet130.78 KB

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Product Reviews

5.00 out of 5 based on 2 reviews
- March 16th, 2010
5 out of 5

I bought these tubes for my sovtek mig 60 and the amp came alive. Very good low end and crisp highs!

- December 18th, 2009
5 out of 5

I have used the EH EL-34 in the outside sockets of my Mesa/Boogie Mark 3 Simulclass amp. This tube sounds the best for my amp. It is very musical and has a pleasant overdrive quality as well as good clean tone.

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