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What do you see as the downside of tubes?

I have decided on getting a tube amp and it will be the integrated Mastersound 300B driving a pair of Living Voice Avatars, so at least that decision has been taken.

My main question is what you see as downsides of having a tube amp. As I've decided on getting an integrated tube it's really about what the downsides are I might want to know about beforehand.

The ones I'm aware are the following.

-The tubes need to be replaced and in the case of a 300B this will be somewhat costly.

-Bias is another issue but I'm not sure how big an issue. Do you plug in your meter every so often or just when you roll tubes or replace a dead one? The meter as such isn't gonna be a big issue as I don't think it's that expensive.

-Heat won't be a big issue as we have no kids nor a nosy dog that could get burned. Hope my electricity bill isn't gonna go through the roof, but then again, I can't quite imagine that.

I'd appreciate if you could add whatever your experiences are regarding this question are as I'd like to know more before I buy it.

Thanks
krauti
irreay
3 posts
 
Please dont buy a tube amp, thus leaving more tubes for me...seriously though if you havent experience a tube (anything) particularly an amp then get yourself down to your local Hi-Fi shop and listen. After this all should be clear. I have been building and buying tube amps for some 40 years now and have not experienced any major issues (in fact it was a large major manufacturers SS that took out a pair of speaks. I have no idea what "unsound" is on, clearly some bad experiences but not all of us have these. Buy from a good manufacturer sit back and listen and enjoy the MUSIC
krauti OP
46 posts
 
I have a question for Spatialking now. What is the reason for the issue with you not being able to run the tube amp for 24h like you'd do with a SS amp? is it simply to get the most out of the lifetime of your tubes or some other reason.

As I don't think this has been mentioned before I'm quite interested to hear more about it.

Don't think the heat will be much of an issue as I don't listen all that much. It may become an issue though as we don't have central AC (just two of those AC cubes that go into the windows and neither one is where the amp will live and here in Grand Rapids/MI it does get rather humid and pretty warm in the summer. I'll find out either way.
unsound
6,115 posts
 
Irrey, I'm not on anything! Perhaps you should reread the title of this thread. If you've truly been into tubes for as long as you claim, then you should be well aware that the issues I've pointed out have been pointed out by others for just as long.
rleff
1,065 posts
 
If the amp has a standby selector/switch then 24/7 should not be a problem;I think it is more a personal choice.
I don't leave mine on 24/7 and they have a standby switch;I know inrush current flow and tube powering on and off can be a cause of early tube failure but I think it is more a design issue;if implemented well it should not be a issue.
I sure wouldn't mind if Ralph from Atmasphere stuck his head in on the 24/7 aspect just to hear a designer/manufacturers point of view.
johnk's avatar
johnk
1,490 posts
 
Not good to run tube amps 24 hours. Unless you like replacing tubes. Most all tube amp warm up fast. Uli Many of these posts refer to large power tube amps these run very hot the se300b a SET amp does not it will not heat up room will not require extra AC.
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