(9 customer reviews)

Mesa 6L6GC STR 420

This product is currently out of stock and unavailable.


Beam tetrode power tube known for its sweet, warm tone. Valve number equivalents include 6L6GC, 6L6GCR, 6L6G, 6L6GA, 6L6GB. These tubes are compatible with 5881 and any 6L6.

Tested using the state of the art Roetest professional tube testing system.

Matched sets are matched with the new Maxi Matcher 2

Additional information

Weight 3 oz
Dimensions 3.75 × 2 × 2 in
Matched Sets

Single Tube, Matched Pair, Matched Quad

9 reviews for Mesa Boogie 6L6GC STR 420 Power Tube

  1. Peter S.

    Freaking amazing. Very well balanced preamp tubes and the 6l6 tubes are spot on

  2. Sean McLaughlin

    Fantastic price, quick shipping and a great sounding tube. What else can I say?! I will definitely be ordering more products from NessTone as I dive deeper into building guitar tube amps. This site was a great find!

  3. Rock

    Clean sound, Great tubes.

  4. Scott M.

    Excellent matching on the tubes, well packed and boxed with very prompt shipping. I strongly recommend Ness Tone.

  5. Jose Luis Britez

    Excellent tubes and seller.

  6. Jeff K.

    Fast service, great product.

  7. Roland G.

    Perfect! Very fast delivery and the tubes are great. 1980 Peavy Mace

  8. Russell B.

    As described well packed super fast shipping happy will order again

  9. Matthew W.

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