Leaving amplifiers powered up

Leave them on. 

Agree, leave them on and when you do power them down for a few days' absence be sure to also unplug them (or your power strip) to protect from surges or lightning strikes.

My dealer told me I could power down my NAP 200DR each time I do not use it, but as my NAC-N 272 doesn’t have a standby mode and I don’t like the loud plops that comes out of my speakers everytime I power up my NAP, I just leave everything on.

as with HH never turn mine off, unless Holiday or storms - never been an issue since owned NAIM

Revoliño posted:

my NAC-N 272 doesn’t have a standby mode and I don’t like the loud plops that comes out of my speakers everytime I power up my NAP, I just leave everything on.

You could turn the volume to zero when powering up or assuming you follow Naim's power-on sequence for gear, set the 272 to mute before powering the amp. Would you still get pops or plops from the speakers then?

joerand posted:

Revoliño posted:

my NAC-N 272 doesn’t have a standby mode and I don’t like the loud plops that comes out of my speakers everytime I power up my NAP, I just leave everything on.

You could turn the volume to zero when powering up or assuming you follow Naim's power-on sequence for gear, set the 272 to mute before powering the amp. Would you still get pops or plops from the speakers then?

If the switch-on thump comes when turning on the power amp last as is correct order, position of VC will have no effect, so answer is yes.

Some power amps are worse than others, some different each time, and some are designed to prevent, either by switching in the speaker load or a controlled powering up. 

If you have an active system it is particularly important to try to avoid using a power amp that cause a thump, because without the filtering between crossover and speaker driver the delicate tweeter can be at significant risk.

joerand posted:

Revoliño posted:

my NAC-N 272 doesn’t have a standby mode and I don’t like the loud plops that comes out of my speakers everytime I power up my NAP, I just leave everything on.

You could turn the volume to zero when powering up or assuming you follow Naim's power-on sequence for gear, set the 272 to mute before powering the amp. Would you still get pops or plops from the speakers then?

No that doesn't help, I've already tried different scenarios but it plops everytime. Dealer told me that's fine and doesn't do any harm to my speakers but still.. I don't like it.

The answer is simply to leave the power amp switched on all the time, unless you go away on holiday. Then - no plops. 

As the Fish says.   

when I switched out my ML PreAmp for the Naim 272 - my ML amp created a loud disturbing pop and crackle when it was switched on.  We tried every workaround possible....I became concerned that this loud transient POP/Crackle would damage my Wilsons.  Only solution was to replace my ML with a Naim Amp --- problem gone.  Better yet sound quality has improved materially over my older configuration of ML PreAmp and ML Amp.....  Lesson - Naim PreAmps just don't play well with others....regardless of what your dealer says.

Thanks all I will leave powered up. I must admit this is the first Naim amps I've used and they are impressing me more and more. Ill get the NAP250 serviced. My only coment is I'm running through some Mark Levinson rose buds and have had to drop a sub in to help the bottom end out. I have an option on some Naim speakers. Any comments. I only really play vinyl these days.

The pops usually emanate from my Naim amps when switching them on and off.

The plops used to come from me but I have grown used to the noise over the years so that now I don't exhibit such a nervous reaction these days.

Ray

Another one for always one. My 250DR doesn't create a loud pop like the earlier NAIT 5i did, this is more of an electronic ping sound at start up. In both cases the dealer (and this forum) confirmed that it was absolutely normal so it's a non-issue.