Vacuum Tube - E34L, JJ Electronics, Blue Glass

Apex Matched
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Vacuum Tube - E34L, JJ Electronics, Blue Glass

Starting at: $18.95
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Blue glass envelope.

The JJ Electronic E34L adds more power to a standard EL34 due to its higher grid voltage rating. This increase gives the tube more headroom and a tighter response on the low end. The wide frequency response of this tube offers excellent harmonics that work in a variety of genres ranging from the cleanest cleans to rich and aggressive breakup.

Apex Tube Matching
Matched versions of this tube use Apex Matching
RoHS Compliant
Item ID:
Apex Matched, JJ Electronics
Part Numbers
Single or MatchedOur Part NumberUPC/EANJJ Electronics Part Number
Apex Matched PairT-E34L-BL-JJ-MP609722122955
Apex Matched QuadT-E34L-BL-JJ-MQ609722122962
Product Measurements
Body Height98 mm
Cathode Current (Ik)≤ 150 mA
Filament Current (If)1.5 A
Filament Voltage (Uf)6.3 V
Gain (μg2/g2)11
Grid 2 dissipation (Wg2)8 W
Grid Current 2 (Ig2)14.9 mA
Grid Voltage 1 (Ug1)-10 V to -13.5 V typical
Grid Voltage 2 (Ug2)≤ 450 V, 265 V typical
Grid Voltage 3 (Ug3)0 V typical
Grid capacitance (cg1)15.5 pF
Grid to Plate Capacitance (ca/g)1.3 pF
Heater to cathode resistance (Rk/f)20 kΩ
Heater to cathode voltage (Uk/f)≤ 100 V
Internal Resistance (Ri)15 kΩ
Item Diameter33.3 mm
Item Height112 mm
Plate Capacitance (ca)10 pF
Plate Current (Ia)100 mA
Plate Dissipation (Wa)≤ 25 W
Plate Voltage (Ua)≤ 800 V, 250 V typical
Transconductance (S)11 mA/V
Packaging Information
Packaging DimensionsApex Matched Pair version4.6 in. × 3.3 in. × 3.3 in.
Apex Matched Quad version4.6 in. × 3.3 in. × 1.6 in.
Single version1.6 in. × 1.6 in. × 4.6 in.
Weight (Packaging)Apex Matched Pair version0.264 lbs.
Apex Matched Quad version0.528 lbs.
Single version0.132 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet471.55 KB

Questions and Answers

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Asked by Anonymous on November 18th, 2015.
November 18th, 2015
Staff Member
Top Contributor
All JJ tubes are now matched using our new Apex Matching System and as a result we would not be able to match numbers from our previous matching system.
Asked by Anonymous on August 11th, 2017.
Matt H
August 11th, 2017
The E34L will have more headroom compared to EL34's. You can request "low numbers" when ordering to allow for quicker breakup.

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