Do you leave the Jeff Rowland Amp on all the time

I have a Rowland Capri and when I was using it I left it on all the time per the users manual. The manual also stated that in the winter it gives deer ticks a warm place to live so they stay away from your butt!

And Elizabeth, while your getting old and becoming mentally ill, enjoy the music!

Nothing to say indeed and despite deer ticks or pubic bugs, for me the only factor is $. If I could afford to run 100w idle(kind-of average between almost all models of JR) I would keep it on.
It's the following math for me $.15/kW/h * 24hrs * 365days = roughly $1500 annually.

If you are at home all the time listening to music (avid music lover, audio reviewer, etc.) then leave them on. Tubed equipment would be the exception. Unless you don't care about replacing expensive tubes often. Each manufacturer recommends the number of hours that the tubes should last before replacing them (before they fail dramatically and take out something way more expensive). If you listen occasionally or don't care to come home to a house fire, then turn them on when you are about to listen and give yourself 30 minutes to an hour warm up and you are good to go. Assuming your equipment is already broken in. Being an electronics engineer, I can tell you that the saying in our industry is that a $10,000 circuit will protect a 5 cent fuse by blowing first. So, when a tube really fails, it could cause some dramatic expensive repairs. So, it is better to replace tubes on the recommended hour life before it fails. Same with car parts, eh? This is called preventive maintenance. But, if you are home most of the time, leave the Rowland equipment on. If you have to step out, turn if off and turn it back on when you get home.

enjoy

Marakanetz wrote,

"It's the following math for me $.15/kW/h * 24hrs * 365days = roughly $1500 annually."

But 100 watts is only 1/10 of a kW, so the annual total is only roughly $150. (Actually, the cost is closer to $120 annually if you do the math.)

So much for your math.

Cheers, Geoffkait

Again...your car runs better when warmed up...leave it running. You can afford it, and really...who cares? Your oven...warmed up and ready for that pie...even if you don't make pies...ya kever know. Leave it on. If we kept our windows open while running AC on hot days we could maybe cool the world a little, and again...who cares? Your hifi is IMPORTANT...and if YOU don't waste electricity, somebody else will. Climate schlimate! Get away from the coastline...the cheese is better inland anyway. We have a right to the earth's resources because after all, that's why we're here! We can make the world what it once was...a mass of boiling liquid!