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300b vs 845

I own a nice 300b amp but would like to know what I might gain/loose going to a 845 tube. I know I will get more watts and therefore more volume or dynamics, but that's really all I know. I have only heard one 845 amp, a ASL Lalya, its sound pretty good, but a little grainy.
Your thoughts would be a big help.
Thanks
Mike
128x128brm1
artg
362 posts
 
no heat issue really. the 845 845B and 845M all put out similar heat, and not as much as many. My monos use 4 of them, and the room is not hotter in any appreciable way. The 845M's are brighter (as in more lumens) than the 845 and 845B, but not hotter.
c123666
871 posts
 
If the power supply design is correct and of adequate capacity heat should not be an issue with a correctly designed 300b. My Audio Note Conqueror was a space heater; my custom 300b tube rectified amp runs warm but does not materially impact the ambient temperature.
glai's avatar
glai
446 posts
 
My ASL 1009-845 drives avalon opus ceramique with great impact and dynamics in 24 x 14 x10 feet room. It was a surprise as speaker is 87 dB into 4 ohms. I would have cancelled my order of ASL hurricane if i knew ahead of time.
tabl10s's avatar
tabl10s
1,090 posts
 
What 845 tube gives the best overall sound?
artg
362 posts
 
they're more different than better-worse. What you got now? what you lookin to improve on?
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