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6L6 Tube Reviews Chart

6L6 comparison at a glance

Rated 0 - 5 where 0 is Poor and 5 is Excellent

Rows in gray are tubes used for reference

ManufacturerModelNoise / 

Microphonics
DetailHarmonicsComments
Tung-Sol5881

4

5

5

Fat when the amp starts to break up, but at moderate levels is very clean.
Tung-Sol Re-issue5881

5

4

5

The overdriven tone is thick but articulate and just gets fatter the harder they are driven.
JAN-Philips6L6WGB

4

4

5

Price considered, it's the best available NOS of this type; it's all there. Champagne tone with a beer price.
JJ Electronic

5881

5

4

4

The tone is very balanced with no notable weighting in the response.
JJ Electronic6L6GC

4.5

5

4

Sparkling highs, warm mids, and controlled bass response.
Mullard6L6GC

4.5

4.5

4.5

Lots of punch and some really nice bluesy sound.
Preferred Series

6L6GC

5

5

4.5

Versatile and can sound great in many amplifiers. It is well balanced from top to bottom.

Sylvania6L6GC

2

4

4

Microphonics derailed the overall results
Sovtek5881WXT

4

3

3

Good enough for most of the major amp makers, but lacking the harmonic complexity of the others in this class.
Sovtek6L6WXT+

5

4

4

Good all around tube. Low noise and microphonics.
SovtekKT66

5

5

4

Killer tone. Very similar to their 6L6WXT+.
Svetlana6L6GC

4.5

4

4

Very smooth and balanced frequency response.
SED / Winged"C"

6L6GC

4

5

5

Unequaled clarity and complex harmonics, plenty of sustain and depth.
Tube Amp Doctor

6L6GC-STR

5

5

4.5

They have powerful deep bass and a clear, airy top end.
Tube Amp Doctor6L6WGC-STR

5

5

4.5

The complex midrange and sweet highs are outstanding.
Tung-Sol

6L6-G

3.5

4

4.5

Has a clean, warm sound, that overdrives nicely.  Be sure you have the space for its large bottle.

Tung-Sol6L6GC-STR

5

4.5

4.5

Has a clean, warm sound, that overdrives nicely.
Tung-SolTung-Sol7581A

4.5

5

4.5

Balanced, detailed, rich and responsive.




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