Vacuum Tube - E34L, JJ Electronics, Blue Glass
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Starting at: $30.69
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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.
Matched versions of this tube use Apex Matching
RoHS Compliant
| Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Apex Matched Pair | T-E34L-BLUE-JJ-MP | 609722122955 | |
| Apex Matched Quad | T-E34L-BLUE-JJ-MQ | 609722122962 | |
| Single | T-E34L-BLUE-JJ | 609722122948 | E34L Blue |
| Body Height | 98 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 Diameter | 33.3 mm | ||
| Item Height | 112 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 Dimensions | Apex Matched Pair version | T-E34L-BLUE-JJ-MP | 4.6 in. × 3.3 in. × 3.3 in. |
| Apex Matched Quad version | T-E34L-BLUE-JJ-MQ | 4.6 in. × 3.3 in. × 1.6 in. | |
| Single version | T-E34L-BLUE-JJ | 1.6 in. × 1.6 in. × 4.6 in. | |
| Weight (Packaging) | Apex Matched Pair version | T-E34L-BLUE-JJ-MP | 0.2558 lbs. |
| Apex Matched Quad version | T-E34L-BLUE-JJ-MQ | 0.5116 lbs. | |
| Single version | T-E34L-BLUE-JJ | 0.1279 lbs. |
| T-E34L-BLUE-JJ - Single version | Body Height | 98 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 Diameter | 33.3 mm | |
| Item Height | 112 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-BLUE-JJ-MP - Apex Matched Pair version | Body Height | 98 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 Diameter | 33.3 mm | |
| Item Height | 112 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-BLUE-JJ-MQ - Apex Matched Quad version | Body Height | 98 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 Diameter | 33.3 mm | |
| Item Height | 112 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 |
 Specification Sheet | All Models |
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Specifications, Files, and Documents
Questions? Contact us at [email protected], or give us a call at 480-820-5411
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.
Product Reviews
I just installed a pair in my EVH EL 34 50 watt head. The amp is way louder. The head is alive and well.
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 !
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.
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.