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Originally Posted by maxxy /img/forum/go_quote.gif
choosing proper tubes
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This shouldn’t really be an issue. Most amps come with their own tubes, which you can of course change out, but it’s usually simply a matter of searching for compatible model numbers, no big deal really, and there are usually people on here who have already tried it with a particular amp.
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Originally Posted by maxxy /img/forum/go_quote.gif
tube longevity (or lack thereof)
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Most tubes actually have a pretty decent lifespan, often lasting years. By the time they need to be replaced chances are you’ll already have different tubes on hand from experimenting. Otherwise, they really aren’t too expensive unless you’re going for a really rare or exotic tube.
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Originally Posted by maxxy /img/forum/go_quote.gif
tube price
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Well this would obviously differ between amps but most of the tube purchases I’ve made have been less than $20 per pair. Not bad really.
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Originally Posted by maxxy /img/forum/go_quote.gif
biasing
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I don’t really think this is necessary on these types of amps.
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Originally Posted by maxxy /img/forum/go_quote.gif
humming
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This can be an issue, but is usually not.
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Originally Posted by maxxy /img/forum/go_quote.gif
microphonics
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The tubes I’ve used haven’t been very microphonic really. I can tap the outside of the case and hear a “ding” but that’s about it.
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Originally Posted by maxxy /img/forum/go_quote.gif
heat
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This could potentially cause problems, but I have solid state equipment that gets just as hot. A bit of air circulation seems to make a world of difference.
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Originally Posted by maxxy /img/forum/go_quote.gif
warm up time
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This is sort of overblown. It might take an amp 5-15 mins to sound best after it’s turned on, but that doesn’t mean it’s going to sound
bad during that time. Often times people can’t really tell a difference after the first 30 seconds or so.
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Originally Posted by maxxy /img/forum/go_quote.gif
A "night and day" kinda difference?
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No, I wouldn’t say that, and if that’s what you’re looking for I think you’ll be disappointed. The differences likely won’t jump out at you. You might notice the difference in things like being able to listen for longer periods without listening fatigue, etc. That’s not to say that there aren’t real differences in the music, there are, but don’t expect a miracle.