I’m having trouble understanding your question . If you have multiple failures with new Tubes that have been stored , it sounds like your amp needs service . Some of the newer Manley’s have changed Tube values due to Tube availability . While power tubes take 100-200 hours to break in , input/driver Tubes also require some time. Usually less . If your tube pins ( legs ) are oxidized , clean them with De-oxit and a Q-tip . Also contact Manley directly and you will get a more knowledgeable response . Also IMHO NOS Telefunkens are some of the best Tubes on the planet . Unfortunately, their price reflects this . But I would definitely contact Miss Eva at Manley . Happy Listening , Mike.
Does a tube need the break-in hours?
Most probably not, but not sure why :)
Does anybody know a good substitution for 12AT7WA tubes? I have bought 8 of them about 10
years ago for Manley Stingray. Now, when I need a replacement, none of them are good
(ones are labeled by Manley others are Philipps).
(An almost 20 years old Stingrey remains in a good shape.)
Does anybody know a good substitution for 12AT7WA tubes? I have bought 8 of them about 10
years ago for Manley Stingray. Now, when I need a replacement, none of them are good
(ones are labeled by Manley others are Philipps).
(An almost 20 years old Stingrey remains in a good shape.)