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How hot is hot when moving from class a/b to to a or tubes?

I am considering moving from a class a/b Luxman L509x to a class a or tube amp. 
I have never owned a class a or tube amp, so have no experience of living with one. My kids are hopefully old enough and wise enough not to burn themselves, but I do live in an already warm house with bifold doors leading to a south facing garden. There is no escaping the sun, despite having uv treated glass. 
 
My room is roughly 9 meters by 12 open planed living space. Equipment is, Luxman L-509x integrated, Zu union 6 supreme, 99db sensitivity (this is why I am considering a lower powered tube I can barely turn the Luxman up) music is played roughly 6 hours a day, more on weekends  

who here has moved from class a/b and d to class a with or without tubes. What were the differences of things like:

warming up time 

additional heat to the home

Running in summer time 

additional cost to run

any considerations I should make before purchasing something. I will try in my home, but will need to free up funds 
 

 

mpoll1

Showing 1 response by curiousjim

curiousjim's avatar
curiousjim
5,093 posts
 

@mpoll1 

Another thought might be to get a tube preamp and a SS class A amplifier or two.  The tubes in the preamp can last 10,000+ hours and throw off a lot less heat.  You can get the tube sound without the fuss and expense of output tubes. Also many companies are making hybrid amps that have driver tubes, solid state output.  I have a couple of amps that are exactly opposite of that.  They have solid state drivers and tubes for the output.

All the best.

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