smib
Legendary Knight
Have to agree Marty, valves rule.There is definitely no competition between Valve and Tranny amps for warmth. Over the years I have had a number of valve guitar amps that have been used and abused and never given me any trouble and I have only ever had to replace one pair of valves (on an amp I got from a mate that wasn't working). You'd be surprised at some of the marine equipment from 'back in the day' that I worked on with valves and it was judged suitable for use on life boats etc. with no special protection required for the valves. Once in circuit the things are as tough as transistors if not tougher and it generally takes a failure of some other component or abuse and incorrect operation to kill them. One thing to remember now is that, no matter what the brand name is on the bottles, all new valves are made in China (Shenzhen if I recall correctly where just about every valve amp made in China originates) and they are made on old Soviet era machinery (I think they bought the innards of the Sovtek factory) so it's simply not worth paying through the nose for 'branded' valves. There simply aren't any other valves being made in the world today. It's hard to say whether 'New Old Stock' valves are better than 'New Rinky Dinky' one's but folks definitely believe there is and I suppose that, given that the equipment making new valves is the same machinery that was making valves for Russian equipment in the 50's and 60's and has 60-70+ years of wear in it they might be right but I'm not convinced. The beauty of valves is that, as long as the bottle is airtight and the innards are wired right it will work. No tiny little bundles of semi-conductor trannies to worry about and, if it ain't glowing pull it out, plug in another and away you go.
The debate on N.O.S, or new chinkyrusky ones, I think depends on your application.
All I can say is you can tell the difference for HiFi, particularly when amplifying vinyl LP as a source!
Don't get me wrong, some chinkyrusky valves are very good and can be very expensive.
But a lot are aimed at the instrument amp market, where sonic definition is not the aim.
Certain N.O.S brands had specific internal construction more suited to HiFi of the day, and still run true today.
In HiFi ,there is a lot of "Snake oil".
All I know is, which valve brands / types from the 1950-60s work and sounds good for me.
As you say valves are bombproof, you just have to wait for them to warm up, don't rush.
Just like most things made in the 50s........ including me!