Vacuum Tube - EL34 II, JJ Electronics, Pentode

Vacuum Tube - EL34 II, JJ Electronics, Pentode

JJ Electronics
Vacuum Tube - EL34 II, JJ Electronics, Pentode image 1
Click to zoom in
Customer Images:
No Images yet! Submit a product image below!
Starting at: $16.95
In Stock

The JJ Electronic EL34 II is a different construction of the classic EL34 tube that offers a different tonal palette than the original. This tube has a more compact plate structure than standard EL34’s. The JJ EL34 II has an increased low to low-mid end with plenty of headroom to spare. This tube has a thick and tight bass response. The mids are balanced and harmonically rich with pleasantly smooth highs. The JJ EL34 II is stronger than the original but not harsh sounding in any way. When overdriven, this tube has a warm and dynamic distortion that rivals many vintage tubes.

Apex Tube Matching
Matched versions of this tube use Apex Matching
SKU:
T-EL34II-JJ
Item ID:
039636
Brand:
JJ Electronics, Apex Matched
RoHS Compliant
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
SingleT-EL34II-JJ841358101649
Apex Matched PairT-EL34II-JJ-MP841358101663
Apex Matched QuadT-EL34II-JJ-MQ841358101670
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 Capacitance (cg1)15.5 pF
Grid Current 2 (Ig2)14.9 mA
Grid Voltage 1 (Ug1)-13.5 V typical
Grid Voltage 2 (Ug2)≤ 450 V, 265 V typical
Grid Voltage 3 (Ug3)0 V typical
Grid to Plate Capacitance (ca/g)1.3 pF
Heater to Cathode Voltage (Uk/f)≤ 100 V
Heater to cathode resistance (Rk/f)20 kΩ
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-EL34II-JJ-MP4.6 in. × 3.21 in. × 1.65 in.
Apex Matched Quad versionT-EL34II-JJ-MQ4.6 in. × 3.2 in. × 3.21 in.
Single versionT-EL34II-JJ1.59 in. × 1.59 in. × 4.61 in.
Weight (Packaging)Apex Matched Pair versionT-EL34II-JJ-MP0.266 lbs.
Apex Matched Quad versionT-EL34II-JJ-MQ0.532 lbs.
Single versionT-EL34II-JJ0.133 lbs.
Product Measurements by Item
T-EL34II-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 Capacitance (cg1)15.5 pF
Grid Current 2 (Ig2)14.9 mA
Grid Voltage 1 (Ug1)-13.5 V typical
Grid Voltage 2 (Ug2)≤ 450 V, 265 V typical
Grid Voltage 3 (Ug3)0 V typical
Grid to Plate Capacitance (ca/g)1.3 pF
Heater to Cathode Voltage (Uk/f)≤ 100 V
Heater to cathode resistance (Rk/f)20 kΩ
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-EL34II-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 Capacitance (cg1)15.5 pF
Grid Current 2 (Ig2)14.9 mA
Grid Voltage 1 (Ug1)-13.5 V typical
Grid Voltage 2 (Ug2)≤ 450 V, 265 V typical
Grid Voltage 3 (Ug3)0 V typical
Grid to Plate Capacitance (ca/g)1.3 pF
Heater to Cathode Voltage (Uk/f)≤ 100 V
Heater to cathode resistance (Rk/f)20 kΩ
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-EL34II-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 Capacitance (cg1)15.5 pF
Grid Current 2 (Ig2)14.9 mA
Grid Voltage 1 (Ug1)-13.5 V typical
Grid Voltage 2 (Ug2)≤ 450 V, 265 V typical
Grid Voltage 3 (Ug3)0 V typical
Grid to Plate Capacitance (ca/g)1.3 pF
Heater to Cathode Voltage (Uk/f)≤ 100 V
Heater to cathode resistance (Rk/f)20 kΩ
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

My Project Lists

You must be logged in to add items to a project list.

Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet495.76 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on August 27th, 2015.
JustinG
August 27th, 2015
Staff Member
Top Contributor
The JJ EL34II tube will offer earlier power tube breakup than a standard JJ EL34 but will not change the overall output of your amplifier in a significant way. Both tubes are rated at 25W so the difference would be in the plate structure which allows you to achieve a slightly tamer output with earlier breakup.
Asked by Anonymous on August 31st, 2015.
JustinG
August 31st, 2015
Staff Member
Top Contributor
The EL34 II has a different, narrower plate structure which produces a tight, creamy overdrive distortion at a lower overall acoustic volume level as compared to a JJ EL34.
Asked by Anonymous on October 5th, 2017.
Matt H.
October 5th, 2017
Staff Member
If your amp calls for EL34's then these should work. You will want to specify "middle numbers" in the notes section of the checkout process for compatibility with your Boogie.

Product Reviews

5.00 out of 5 based on 2 reviews
- November 28th, 2019
5 out of 5

Precisely matched tube set is a breeze to bias!

- October 14th, 2015
5 out of 5

Recently retubed a Marshall 100 watt plexi. The old Svetlana EL34s were replaced w JJEL34ii power tubes. Balanced and biased a bit hotter than factory....the results are excellent, rich tone with deep tight bothom end and much smoother mids and highs. I am quite pleased