I left my Aleph 2s on for 2 months, when I was breaking in some power cords. Those use 600 watts at all times, and I really didn't notice much of a change, maybe 10 bucks. I bet you could check with the electric company and they could tell you exactly how much that would cost.
Question from a Poor Pass owner
I am thrilled (finally) with my Aleph-3.It sounds like a different amp after its been on for a couple days.I want to leave it on 24/7 but since Im a working stiff and could hardly afford this amp to begin with,Im concerned about my electric bills going through the roof.The amp sucks 250 watts at all times.Could anyone make an educated guess what it would cost to keep it on all the time?