The Mesa Boogie 6L6 STR-440 tubes are premium grade, US equivalent, and are the tube of choice in the production of all Mesa 6L6 powered models. The 6L6 STR-440 amp tubes have remarkable bass definiti... Read More
The Mesa Boogie 6L6 STR-440 tubes are premium grade, US equivalent, and are the tube of choice in the production of all Mesa 6L6 powered models. The 6L6 STR-440 amp tubes have remarkable bass definition, articulate mids and shimmering highs that keep every note amazingly intelligible, with a smooth, creamy character. Premium structural quality provides exceptional consistency and reliability that rivals NOS (New Old Stock) durability and sonic character. These Mesa Boogie amp tubes come as a matched pair and are amazing for all styles of music.
Mesa Boogie starts with the finest tubes from around the world, tests and matches each one under simulated operating conditions to the tightest, most demanding industry spec. Then backs them with the best warranty in the business.
Robotube State-of-the-Art Tube Tester
With the brains of a computer and the ears of a musician, Robotube runs a battery of seven exacting tests on each power tube and analyzes performance so thoroughly it can even predict the tube's lifetime. Designed by Mesa Engineering and built for us by an aerospace firm, Robotube is a one-of-a-kind machine and easily the most modern and powerful in the industry
Reviewed by 5 customers
Displaying reviews 1-5
Straight scoop, no propaganda...when these tubes work they sound great...thus the 2 stars instead of 1. My new (last year) Mesa Boogie Mark V goes through Mesa tubes at such an alarming rate I have to quit using them (free or not)...they simply don't hold up. Now, the Mesa guys will tell you their tubes are the best and are rated to within 5% of specification vs. the typical 10% of spec' for other tubes. Doesn't matter if you have to replace them every 2-3 months, you're da#?&ed! Some of the tubes I've been sent exhibit infant mortality, in other words, DOA! This is the heart of the problem: an American company with a good reputation that is complacent, arrogant and no longer listens to its customers. Get 'em if you like the name brand, but if you're a practical musician you'll look elsewhere.
Avoid these tubes unless they are a direct replacement they RATTLE LIKE CRAZY.
i got two sets and they got bad rattles in them. Besides that they do sound good if you can get past the rattles
Regardless of where these tubes come from, they are an excellent value and quality. I have used Mesa tubes in my Stereo 2:90 and they have alway sounded great and had long life. Please keep up the good work!
I didn't realize just how good my Mesa sounded until I installed these tubes!!! These tubes sound way better than the EL34's I recently had installed. My amp sounds amazing on stage now!!!
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