Vacuum Tube - 6L6, Electro-Harmonix

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Vacuum Tube - 6L6, Electro-Harmonix

Starting at: $21.75
In stock

Superior power Beam tetrode with large plate dimensions and improved grid structure for increased power handling capabilities. Excellent tone and performance compared to most other 6L6 or KT66 types.

  • Modeled after the vintage RCA 6L6GC "blackplate"
  • Mica spacers with metal springs eliminate tube rattle and microphonics
  • 5881/KT66 equivalent
Apex Tube Matching
Matched versions of this tube use Apex Matching
RoHS Compliant
Item ID:
Electro-Harmonix, Apex Matched
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Apex Matched PairT-6L6-EH-MP609722128414
Apex Matched QuadT-6L6-EH-MQ609722128421
Product Measurements
Capacitance, Grid to Cathode10 pF
Capacitance, Grid to Heater10 pF
Capacitance, Grid to Screen10 pF
Capacitance, Grid to Suppressor10 pF
Capacitance, Plate to Cathode6.4 pF
Capacitance, Plate to Heater6.4 pF
Capacitance, Plate to Screen6.4 pF
Capacitance, Plate to Suppressor6.4 pF
Capacitance, grid to plate0.6 pF
Cathode Current (Ik)80 mA
Grid Circuit Resistance (Rg), Fixed Bias100 kΩ
Grid Circuit Resistance (Rg), Self Bias0.5 MΩ
Heater Current0.9 A
Heater Voltage5.7 V - 6.9 V
Heater to Cathode Voltage± 200 V
Plate Dissipation (Wa)30 W
Plate Resistance (Ra)33 kΩ
Plate Voltage (Ua)500 V
Screen Dissipation5 W
Screen Voltage450 V
Transconductance (S)5.2 mA/V
Packaging Information
Packaging DimensionsApex Matched Pair version4.75 in. × 3.5 in. × 1.75 in.
Apex Matched Quad version5.3 in. × 4.8 in. × 3.5 in.
Single version1.8 in. × 1.8 in. × 4.8 in.
Weight (Packaging)Apex Matched Pair version0.3 lbs.
Apex Matched Quad version0.6 lbs.
Single version0.15 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet153.98 KB

Questions and Answers

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Asked by Anonymous on March 1st, 2017.
Matt H
March 1st, 2017
By looking at the Valveking manual, it appears that the 6L6 is compatible with your amp.

Product Reviews

5.00 out of 5 based on 1 reviews
- October 8th, 2017
5 out of 5

Bought these to give my 50+year RCA's a rest. This red plate thing must be normal, the same in other amps every time I've tried them. Hmm, may not be long rest....

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