Vacuum Tube - 6L6WGC, Tube Amp Doctor

Tube Amp Doctor (TAD)
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Vacuum Tube - 6L6WGC, Tube Amp Doctor

Starting at: $24.50
In stock

GE-Style 6L6GC with a short bottle and black plate.

The Classic Sound of the 1950s and 60s - Excellent Tone, Maximum Lifetime!

The perfect choice for vintage tweed and blackface amps such as the 1960 Bassman, Twin, Showman or Super Reverb. The complex midrange and sweet heights are a class of its own. The TAD 6L6WGC-STR is our recommendation for classic tone with warm cleans and rich, sweet mids when pushed. Great for fat jazz or blues tones.

The TAD 6L6WGC-STR is a remake of the small bottle GE6L6GC and has the same warm lower midrange and silky top end as the classic GE versions of the 1950s and 60s. Like the historic RCA 5881, this tube features exclusive blackplate anodes and a side getter. The TAD 6L6GC-STR and the TAD 6L6WGC-STR have our exclusive black-plate desings, gold grid wire, double getter construction, no-noise filaments and 1.2mm thick heavy duty glass. This tube is only 80mm high (without pins) and can replace 5881 or 6L6WGB tubes.

see reviews at:
fenderforum "TAD Tubes Question" and
fenderforum "TAD small bottle"

Q: When does a power tube become a Premium Selected power tube?
A: All power tubes labeled Premium Selected have passed the following tests:
- Plate Current (PC) and Amplification (TC)
- Low Noise Test
- Microphonic Test
- Sonic Tests
- Shock Tests
- Listening Tests
- Shorts & Leakage Tests

RoHS Compliant
Item ID:
Tube Amp Doctor (TAD)
Part Numbers
Single or MatchedOur Part NumberUPC/EANTube Amp Doctor Part Number
Matched PairT-6L6WGC-TAD-MP609722123365
Matched QuadT-6L6WGC-TAD-MQ609722123372
Product Measurements
Body Height82 mm
Bulb Temperature250°C
Cathode to Heater Voltage≤ 200 V
D.C. Cathode Current, AF Power Amplifier150 mA
D.C. Plate Voltage, AF Power Amplifier550 V
Grid 1 (control) Voltage, Af Power Amplifier-100 V
Grid 1 Control Voltage, Class A1-14 V
Grid 1 to Cathode, Grid 3, Grid 2, Base Sleeve, Heater Capacitance< 17 pF
Grid 1 to Plate Capacitance< 1.1 pF
Grid 2 Dc (screen) Dissipation, Af Power Amplifier5 W
Grid 2 Dc (screen) Voltage, Af Power Amplifier450 V
Grid 2 Screen Voltage, Class A1250 V
Heater Current0.9 A
Heater Voltage5.8 V - 6.8 V, 6.3 V nominal
Item Diameter38 mm
Item Height95 mm
Load Resistance, Class A12 kΩ
Output Power (POut) @ 5% Distortion, Class A110 W
Peak AF Grid 1 Control Voltage, Class A114 V
Plate Dissipation, AF power amplifier (Wa)30 W
Plate Voltage, class A1 (Ua)250 V
Plate to Cathode, Grid 3, Grid 2, Base Sleeve, Heater Capacitance< 8 pF
Signal Plate Current, Class A1, maximum105 mA
Transconductance, Class A1 (S)11 mA/V
Zero Signal Grid 2 Screen Current, Class A115 mA
Zero Signal Plate Current, Class A1100 mA
Packaging Information
Packaging DimensionsMatched Pair version2.1 in. × 4 in. × 4.6 in.
Matched Quad version2 in. × 4.6 in. × 8 in.
Single version2 in. × 2 in. × 4.6 in.
Weight (Packaging)Matched Pair version0.3 lbs.
Matched Quad version0.6 lbs.
Single version0.15 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet530.79 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on April 17th, 2016.
April 19th, 2016
Staff Member
Top Contributor
This tube could be used in the Blues Deluxe reissue though if you have any concerns you can reference the spec sheet above for ratings etc. This can replace a 6L6GC though there may be a need for bias adjustments.
Asked by peterm on September 28th, 2016.
Matt H
September 29th, 2016
Yes, we would need the PC and TC from your tube and we can sell you one that will match it. If you place your order online, simply put the PC and TC in the notes section of your order.
Asked by Anonymous on March 3rd, 2017.
Matt H
March 3rd, 2017
These tubes are manufactured in China and hand selected by Tube Amp Doctor in Germany.
Asked by Anonymous on July 28th, 2017.
Matt H
July 28th, 2017
This 6L6WGC-STR (GE) is slightly smoother than TAD 6L6GC with reduced bite and brightness. The 6L6GC (RCA) has a lot of grit when overdriven and is bright, focused and chimey.
Asked by Anonymous on August 11th, 2017.
Matt H
August 15th, 2017
The Electro-Harmonix 6L6 has a nice tight response. Most low powered Fender amps have the tendency to get fuzzy in the low end. With that in mind, a tube swap will not change the inherent design of the circuit but may help a bit.
Asked by Anonymous on April 15th, 2019.
No answers yet!

Product Reviews

5.00 out of 5 based on 1 reviews
- December 5th, 2018
5 out of 5

Fantastic power tubes! Gave my clean Dumble/Two-Rock a percussive feel to it and a little more personality. Packs a wee bit more punch in the mids compared to the JJ's it was replacing.

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