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Big_Spark
ZenStalinist said:As for whether it has a switching power supply I don't know, but my educated guess would be no. It has various lumps of transformers.
I would think your right there Zen..Adam too. This is not an area I have any real knowledge about as I don't deal with it.....so I started to look into things a bit being a curious git. It would appear all the cheapo gear has switched mode PSU's, but the quality stuff, including my amp, still uses good old fashioned auto transformers.
So as Kendor said originally, assume the worst power drain and install accordingly.