Vacuum Tube - EL34, JJ Electronics

JJ Electronics
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Vacuum Tube - EL34, JJ Electronics

Starting at: $14.95
In Stock

The JJ Electronic EL34 is another classic from JJ. This tube features a rugged construction leading to an incredibly reliable EL34 with astonishing tone. Overall the sound is nicely balanced with tight lows, a rich and dynamic mid range and clear highs. The JJ EL34 is a great replacement for guitar amplifiers and stereo amps as well.

Apex Tube Matching
Matched versions of this tube use Apex Matching
Choose burned-in tubes for maximum stability and performance.
RoHS Compliant
SKU:
T-EL34-JJ
Item ID:
004841
Brand:
JJ Electronics, Apex Matched
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
SingleT-EL34-JJ609722123020
Apex Matched PairT-EL34-JJ-MP609722123037
Apex Matched QuadT-EL34-JJ-MQ609722123044
Apex Burned-In Matched PairT-EL34-JJ-MPB609722123051
Apex Matched SextetT-EL34-JJ-MS609722166881
Apex Burned-In Matched QuadT-EL34-JJ-MQB609722123068
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 Burned-In Matched Pair versionT-EL34-JJ-MPB4.6 in. × 3.3 in. × 1.6 in.
Apex Burned-In Matched Quad versionT-EL34-JJ-MQB4.6 in. × 3.3 in. × 3.3 in.
Apex Matched Pair versionT-EL34-JJ-MP1.6 in. × 3.3 in. × 4.6 in.
Apex Matched Quad versionT-EL34-JJ-MQ3.3 in. × 3.3 in. × 4.6 in.
Apex Matched Sextet versionT-EL34-JJ-MS13.8 in. × 3.3 in. × 1.6 in.
Single versionT-EL34-JJ1.6 in. × 1.6 in. × 4.6 in.
Weight (Packaging)Apex Burned-In Matched Pair versionT-EL34-JJ-MPB0.266 lbs.
Apex Burned-In Matched Quad versionT-EL34-JJ-MQB0.532 lbs.
Apex Matched Pair versionT-EL34-JJ-MP0.266 lbs.
Apex Matched Quad versionT-EL34-JJ-MQ0.532 lbs.
Apex Matched Sextet versionT-EL34-JJ-MS0.798 lbs.
Single versionT-EL34-JJ0.133 lbs.
Product Measurements by Item
T-EL34-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-EL34-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
T-EL34-JJ-MS - Apex Matched Sextet 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-EL34-JJ-MPB - Apex Burned-In 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-EL34-JJ-MQB - Apex Burned-In 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
T-EL34-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

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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 December 29th, 2016.
Matt H
December 29th, 2016
No, it depends on your amp. With any retube, you may need to make adjustments to your amp depending on the type of bias it has. Your amp will either be fixed adjustable bias (has bias pot on the back of the amp) , Fixed non-adjustable bias (bias is fixed by a resistor in your amp), or cathode bias (self biasing no bias required). The manual for your amp should be able to tell you what type of bias you have. Rebiasing am amp is something that should be done by an experienced tech.
Asked by cwrichard on October 29th, 2017.
Matt H
November 1st, 2017
Please contact customer service at: custservice@amplifiedparts.com or 480-296-0890.
Asked by Anonymous on February 13th, 2018.
Matt H
February 13th, 2018
No these are regular EL34's. For the EL34II's do a search for T-EL34II-JJ.

Product Reviews

2.67 out of 5 based on 3 reviews
- June 29th, 2020
1 out of 5

... and now one of them died and blew a fuse.
The matching on these were nice and tight so I'm guessing these tubes are just junk.
Stick with inexpensive 'Marshall-labeled' tubes- they sound great and last for years. 40+ years with zero problems.

- June 28th, 2020
2 out of 5

These don't go well with 1959HW or YJM100.
The low is muddy and there is a weird lower-mid honk that is VERY distracting. Highs aren't great either.
These things get worse as the tube gets more warmed up whereas most tubes sound better as they get warmer.
The JJ EL34 II's are only just ever so slightly better but not much. (I bought a set of each to try)
For Plexi's I guess I will never again venture away from Svetlana, Mullard, and Electro Harmonix. Those sound great every time.

- September 17th, 2019
5 out of 5

Purchased a matched quad set with the burned in option for my EVH 5153 EL34 Stealth
Very satisfied