I am honestly not sure, I don't have one of those monitoring units.
One thing I do know is my reciver is more efficent now. I just switched my old Aiwa shelf system speakers that were 6ohm and only about 75DB efficent for a pair of Klipsch speakers that are 4ohm and about 98DB efficent. I do not have to turn the volume up nearly as loud as I used to to get the same out put...and as a result the amp is much much cooler.
As for the utilities...I just called the dept of utilities and asked them what the previous tennants paid during the same period last year.
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