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But even then, I warm the amp up for half-an-hour before serious listening sessions.
This week's <A HREF="http://www.stereophile.com/soapbox.shtml">Soapbox</A> has Martin Bruczkowski pondering how much power is being wasted by audiophiles who leave large systems on 24/7. What are <I>your</I> power habits?
I have a ritual of turning everything off before going to sleep and "booting" the whole system after getting up in the morning. Of course, I would much rather leave everything on all the time, but that would cost me an extra $1000 a year in power bills. For $1000 I prefer to buy lots of records, or perhaps another PS Audio Power Plant P300, or one of those new upsampling DACs . . .
I find Martin's comments quite alarming. Given the emphasis on power efficiency (in Europe) of household products such as refrigerator-freezers and "leisure" products such as PCs, maybe it is time that we started looking at how much high-end audio is costing in real terms. I will be upgrading shortly to a new home cinema setup based around the Rotel 1095 power amp, and, given my normal regime of keeping my system constantly powered up, I may have to think again. I love nothing better than coming home, popping on a CD, and relaxing. Do I want to wait three hours until my equipment has powered up? I recently read some Mark Levinson specs for the beautiful No.334 power amp, and they seem to have it sorted (to some extent), providing the possible buyer with power-consumption information for "Standby" and "in use" modes. Martin's suggestion that reviewers should emphasize the electrical "efficiency" of new equipment is an excellent idea. I mean, these days, the efficiency of speakers can become a major player in the selection of both amps and speakers. Why should the power input be overshadowed by the power output?
I have a Krell KAV-300i partnered with a KAV-250cd, which both have "Standby" modes. I haven't tried leaving them on all the time, but they still sound fantastic anyway. The best improvement I have made recently is to add a balanced power supply by Peach Audio (Sydney, Australia). The results have been incredible!
I pretty much turn it on 10 or 15 minutes before I sit down to listen, and turn it off when I know I'm completely done, at least for a couple of hours. I would prefer to leave it on most of the time, but I have two reasons for not doing so. One, my preamp and amp are tubed, and I don't want them to burn out any sooner then they have to. Second, because they are tubed, my wife is convinced that the second I leave them unattended they will burst into flames, so I couldn't leave them on even if I wanted to.
I am currently upgrading my equipment and have recently purchased a new solid state power amp - that stays on all the time unless I am away from home more than two days. The rest of my components stay off. My next purchase will probably be a tube pre-amp and that too will stay on at all times!
As I use a tube pramp and my amp doesn't require more than 5 minutes' warming, I switch them on a few minutes before listening. And if the sound even improves later, why should I complain? Just remember that some gear is very power-hungry. A tubed preamp like the SFL-2 draws 160W from the socket! Watch your electricity bill!
Because I am retired, I listen at least once a day, and quite often several times a day. I tend to turn off the tube items unless I know that I will be using them again in an hour or so. I really hate to use the electricity, but it takes too long to get some of them back up to listening levels.
My DAC and a few other items must be on 24 hours a day for the best sound, and because you can't turn them off without unplugging them. The rest of my stuff is off when not in use. Also, thanks to the wonders of macros and four NoiseTrappers linked together, one button on our remote turns everything on or off.
My front-channel speakers and my subs have built-in amps. I leave them powered up 24/7/365. I leave everything else off until I need it. The dimming of the lights when the system starts drawing power from the wall is part of the listening experience for me.
Components typically have provision to stay powered up but on stand-by, whatever that is until the "on" switch is thrown. This is done only prior to listening however. Have no idea how much power a CD player, pre-amp and amp consume at idle. Anyone know in terms of dollars per year?
I leave my system on 24/7. Will shut down when I leave town for more than a day. My monthly utility bill is about $50, with $30 for electricity and the rest for gas. I have couple of tube units in my system, and I turn these off when not listening. Power amp and other source components are on all the time. Yes, we audiophiles do waste electrical energy a lot.
During weekdays,I turn on my components 1 hr before listening(sufficient warm up time for amps) and after listening, I shut off all components and disconnect plugs from wall. On weekends, I leave all components on, to allow me to use them anytime I wish without waiting.
Amps go on only for listening sessions. Everything else is always on or "Standby-On." Everything gets totally shut off during thunderstorms (even though I do have surge protection and line conditioning, it's not worth the risk).