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Krell KSA 200s power feed

Hi All.

I wanted to know what your experience is and opinion on powering this amp.
https://www.stereophile.com/solidpoweramps/694krell/index.html


I live in Australia, so our power is 230 volts and 10 amps.
We have always used this amp directly into the wall.
But reading through the manual I can see it’s recommended to have 20 amps into the amp.
I don’t notice any sonic issues with running it directly on 10 amps.
I wanted to know what your opinion was as I was getting an electrician to put some additional power points and whether I should get him to wire a 20 amp line just for the Krell.
kunalraiker

Showing 5 responses by invalid

invalid
1,268 posts
 
You shouldn't have a problem being you are on a higher voltage than the USA. It can make a difference to have a dedicated circuit that's not shared with other stuff from a noise perspective.
invalid
1,268 posts
 
The op is in Australia, where the line voltage is almost double of the USA, so a 10 amp 230 volt circuit is about equal to a 20 amp 120 volt circuit. The only thing we don't know, is it a dedicated outlet.
invalid
1,268 posts
 
Evidently the amp can draw more than 10 amps. Krell says it should have a dedicated 20 amp line. It will only need 20 amps if operating near it's limits but I would believe what Krell is suggesting

It will only draw half that on 230 volts.
invalid
1,268 posts
 
I believe krell must word their manual for 120 volt lines. I have the ksa 300s on a 20 amp breaker, but it's a 120 volt line. You only need half the amperage when the voltage is doubled.
invalid
1,268 posts
 
The only issue I see is protecting the amp. In the US, we have to reduce the fuse size by half if you go from 120 to 240, and it could be a reason why voltage changeover is usually not user selected -- the user will forget to change the fuse.


I never thought of changing the fuse if going up in voltage, but it makes perfect sense.
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