(4 customer reviews)

Mesa 6L6GC STR 420 Red

This product is currently out of stock and unavailable.


This is the Coke Bottle (ST) style Mesa Engineering 6L6GC. Beam tetrode power tube known for its sweet, warm tone. Valve number equivalents include 6L6GC, 6L6GCR, 6L6G, 6L6GA, 6L6GB.  Brand new vacuum tubes from old stock. No longer sold new. Restore the sound of your older Mesa Boogie with these original NOS tubes.

Tested and matched on a RoeTest professional computer testing system, the best tester available today. Also matched on a Maxi-Matcher 2.


Additional information

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

Single Tube, Matched Pair, Matched Quad

4 reviews for Mesa Boogie 6L6GC Coke Bottle ST style Red STR 420 Power Tube

  1. Michael F.

    Excellent recommendation unbelievable service.

  2. Don Floyd

    It was a pleasure working with Craig. I restore vintage guitar amps and I had the need for a quad set of closely matched tubes which he worked with me to create. He did such a good job, I purchased another quad set to match the first. The price and quality were way better than I could have hoped for. I will definitely be placing my future tube orders with Craig at Nesstone.

  3. Paul M.

    I’m very happy w/the matched 6L6 tubes. Fast shipping, great prices!

  4. Charlie D.

    Excellent tubes
    Great price
    Very fast shipping
    Did not have Mesa or 6L6 GC written on tubes though

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