Vacuum Tube - E34L, JJ Electronics, Blue Glass

Vacuum Tube - E34L, JJ Electronics, Blue Glass

JJ Electronics
Vacuum Tube - E34L, JJ Electronics, Blue Glass image 1
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Starting at: $18.95
Product Options
  • Apex Matched Pair (T-E34L-BL-JJ-MP)
  • Apex Matched Quad (T-E34L-BL-JJ-MQ)
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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
SKU:
T-E34L-BL-JJ
Item ID:
004828
Brand:
JJ Electronics, Apex Matched
Type:
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
SingleT-E34L-BLUE-JJ609722122948 E34L Blue
Product Measurements by Type
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 versionT-E34L-BL-JJ-MP4.6 in. × 3.3 in. × 3.3 in.
Apex Matched Quad versionT-E34L-BL-JJ-MQ4.6 in. × 3.3 in. × 1.6 in.
Single versionT-E34L-BLUE-JJ1.6 in. × 1.6 in. × 4.6 in.
Weight (Packaging)Apex Matched Pair versionT-E34L-BL-JJ-MP0.264 lbs.
Apex Matched Quad versionT-E34L-BL-JJ-MQ0.528 lbs.
Single versionT-E34L-BLUE-JJ0.132 lbs.
Product Measurements by Item
T-E34L-BLUE-JJ - Single versionBody 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
T-E34L-BL-JJ-MP - Apex Matched Pair versionBody 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
T-E34L-BL-JJ-MQ - Apex Matched Quad versionBody 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

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet471.55 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on June 20th, 2016.
Matt H.
June 21st, 2016
Staff Member
The E34L will have more headroom compared to EL34's. You can request "low numbers" when ordering to allow for quicker breakup.

Product Reviews

4.33 out of 5 based on 3 reviews
- July 14th, 2020
5 out of 5

Just replaced the EL-34's in my Dynakit ST-70 Amp with E34L (JJ's) Amp is now louder, and SOUND IS AWESOME ! Love J.J.'s, they are the best !

- January 18th, 2019
3 out of 5

LAME! The old Czechoslovakian Tesla tubes had special tubes that used black light tinted glass for making their tubes a truly cool groovy very deep dark violet blue color, and if you were super lucky you could also get rich a deep dark read heat lamp/chicken coop tinted glass too, from Tesla. Those colors were so dark and rich looking, but these tubes are just really poor knockoffs, with a slightly blue tinted glass. If JJ would just buy some UV lamp cullet glass & get the right coloring to give these that black light UV lamp tint, they could charge $20 extra, and I'd pay it. Lately their glass has been so poorly annealed, why not just buy a boat load of black light glass cullet from China? I have had over a dozen JJs break at the base, with a circular crack in the glass, indicative that they are not annealing the glass properly. The heat makes it crack. I suspect they may be using Chinese glass now anyway, rather than their European glass, and it needs a different lehr treatment. I am surprised that Sino Shuguang hasn't made some hi fi tubes from black light glass or chicken coop glass.

- May 15th, 2015
5 out of 5

I like the JJ EL34L's, and the blue glass is cool. :) I build amps, so I order periodically from you guys and will continue to do so.

Substitute Products

The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.