Let’s remember that when a Naim box is idle or on standby, the only way to dissipate energy is heat and the logo light (probably heat in a bigger proportion).
This is heat that will be saved to the house heating system. I would therefore say that leaving a Naim system on 24/7 is reasonable and convenient, except in the summertime.
On the other hand, if you switch off your Naim, you can buy a new box every 10-20 years.
For me, the decision is easy.
Our main entertainment power guzzler is a Pioneer Plasma TV in the lounge. It’s an oldie, but still works fine so I’m reluctant to replace just yet - it only get used for about 2hrs each evening though.
A quick back of the envelope calculation shows my whole Hi-Fi system idles at ~ 35w, which includes the Innous PhoenixNET and Roon Nucleus. Luckily, both the Linn KDSM and Devialet have low power standby modes when idle and come up to full performance nice and quickly when I want to use them.
Interesting times 
Naim have a new range (!) out soon, which will double as electric heaters…
According to OFGEM electricity cap is currently 28p per KWH going up to 52p on 1st October. I wish my rate was as good as yours.
One of the worst offenders are tumble dryers. We only use ours occasionally. A ‘B’ rated tumble dryer will cost about £150 per year depending on usage (that is based on 28p per KWH; £278 per year from October)
We have an A++ heat pump tumble dryer that we use only in the winter when it’s impossible to get stuff dry on the line. These things are all good, so long as you can afford them. The people who need to make savings on energy the most probably can’t afford the high tech appliances that help make it possible. It’s a real challenge.
Yes quite agree. I made a formal complaint to John Lewis. They show typical annual electricity costs. When you press the i logo it says assuming 10p per hour. They refused to change the 10p saying it was up to customers to work it out. Clearly a customer would get his money back in less than a year if he/she upgraded to a standard A++ from a B tumble dryer. I said by giving more accurate information you would save customers money and sell more expensive tumble dryers!!!
I have some tubes preamps and poweramps, so I am served when I need another heating device.
I had to look up what a heat pump tumble drier was. I had never heard of them - sounds interesting.
Please excuse me for asking this question but I hope someone knows the answer.
I’ve just bought an XPS to power my NDX2. The latter is set to go into standby after an hour, just like it was when I used it without a PS. As the XPS stays on, obviously, does the NDX2 going into standby actually save any power? When it was by itself, there was an audible click when it came out of standby and now there isn’t, so I wonder exactly what’s going on.
When I used it with a PS a while ago I didn’t have it set to go into standby, assuming that it didn’t work.
In short, i dont know for sure. But, my xpsdr stays warm, which suggests current is flowing somewhere when the ndx2 is in standby.
When connected to the xpsdr, the ndx2 cant go into s/by with its smps, it still relies on the lps of the xpsdr. So, whilst it may use less power, nowhere near what it would have used with its own ps.
My ndx2/xpsdr uses 24 watts when ndx2 is off and 27watts when on. I do have an usb drive inserted, however I suspect that makes no difference as the power saving smps in the ndx2 is effectively bypassed by the xps
Thanks. I was assuming that the SMPS was bypassed as there is no clicking. It’s interesting that the difference is only 3W. When I first got the NDX2 it was used with a 555PS and I didn’t use the standby function as I assumed it was only applicable when the player was used by itself. 27W for the XPSDR/NDX2 combo doesn’t seem to bad and at least it’s less than the SN3. The SN3 is doing harder work of course. Thanks again.
Great point, surely consumers will reduce use of such items, thinking maybe TV, Smart devices.
I guess for our Naim systems surely a utility factor needs to be considered.
If you barely use the system, surely its a no brainer to switch off.
Im thinking my daily usage for my Nova, Switch, Server is now barely 2hrs a week.
Sometimes i do use it for background music if working at home, in between meetings.
So with that in mind i think ill power down for a few months and use the Portal and Alexa boxes for background music 
All my house lights and most my plugs are motion or timed on/off.
So the only items left are EV, Router, Smart camera and sensors.
During these times I find it a bit awkward to read excuses and whataboutisms leaving amps on 24/7 and wasting energy
Hi @swtrains
I turn it all off and, with my ears, can hear no difference in SQ, when compared to leaving it all on.
I have measured my stuff: SN2, HiCapDR, NDX2 and Aria.
Ironically, if the promised power cuts materialise this coming winter, we won’t have much choice… we’ll switch off.
Does make me wonder is it all a rouse to distract and blame impending power cuts.
Just as saying most our gas comes from Russia, it doesnt.
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