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Customer
Reviewed in the United States on January 18, 2025
I installed and biased these for my Randall RD45h, and they sound great. I expect them to last given they are Sovtek. Clean cleans, good n' crispy crunch tones, and searing tight leads.
p90
Reviewed in the United States on July 16, 2024
It's not that I don't like these tubesThe problem was that they were shipped in a padded envelope .These are sensitive , GLASS electronic components !What kind of fool decides to ship them in a padded envelope? It wasn't even a good padded envelope
Customer
Reviewed in the United States on January 12, 2024
Decent tubes pretty reasonable price
Anthony S.
Reviewed in the United States on December 3, 2023
Tubes sound great trusted seller
hector andres delgado
Reviewed in the United States on December 23, 2023
I measured them on my tube tester and they are not matched set, they have totally different transconductances
Daniel Culver
Reviewed in the United States on October 24, 2023
Only tubes my particular line 6 spider valve Mkii 212 can take. Learned a bit doing this today. Had a very noisy amp thought the power tubes may have been the issue. I replaced them today and re biased them to 35mv +- 2 mv I was able to get them to 34.9 and 35.1 mv. But the amp was still noisy unfortunately. Doing some more research found that my master volume must’ve had some corrosion in it. (Sounded very scratchy and would turn up sporadically while I’m turning it down.) I powered the unit off and got some crc electronics cleaner and pulled off the plastic knob for the volume control and soaked a cotton swab in the cleaner and then rung out the cotton on the metal knob while turning it back and forth. Now my amp is sounding like it did when I got it :) sounds amazing and these tubes sound amazing now that it’s properly biased as I did not test the old ones coming out but when I put the new ones in I found them set at 29.9mv and 22mv.
Tyler P
Reviewed in the United States on February 22, 2011
I've been using these tubes in a Red Bear MKII amplifier, and the pair I was replacing lasted from before the time I purchased the amp in 2004 until January 2011. The amp itself saw mostly studio use during this period, but it was also carted to a few gigs and took some mild abuse; tubes kept on working. The new ones sound like the old ones, and I don't really know what there is to compare them to.
Dan R. Blakkolb
Reviewed in the United States on April 23, 2010
Three years and still going strong. Still not as good as the old US, UK or German tubes
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