Vacuum Tube - E34L, JJ Electronics, Blue Glass

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

Starting at: $18.95
In stock

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/EAN
Apex Matched PairT-E34L-BL-JJ-MP609722122955
Apex Matched QuadT-E34L-BL-JJ-MQ609722122962
Product Measurements
Body Height98 mm
Cathode Current150 mA max
Filament current (If)1.5 A
Filament voltage (Uf)6.3 V
Gain (μg2/g2)11
Grid 2 dissipation (Wg2)8 W
Grid capacitance (cg1)15.5 pF
Grid current 2 (Ig2)14.9 mA
Grid to plate capacitance (cg1-a)1.3 pF
Grid voltage 1 (Ug1)-10 V to -13.5 V typical
Grid voltage 2 (Ug2)265 V typical, 450 V max
Grid voltage 3 (Ug3)0 V typical
Heater to cathode resistance (Rk/f)20 kΩ
Heater to cathode voltage (Uk/f)100 V max
Internal resistance (Ri)15 kΩ
Item Diameter33.3 mm
Item Height112 mm
Plate (anode) capacitance (ca)10 pF
Plate (anode) current (Ia)100 mA
Plate (anode) dissipation (Wa)25 W max
Plate (anode) voltage (Ua)250 V typical, 800 V max
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 (471.55 KB)Specification Sheet

Questions and Answers

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Asked by Anonymous on November 18th, 2015. 1 person subscribed to this question
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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. 1 person subscribed to this question
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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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