Amplifier noise floor - would a proper hifi trailing socket help

I suggest you read the thread 'Super Lumina speaker cables (again)'. You'll see why I suggest this, and get the answers you need, once you've read it. The hiss you hear is normal, and the search facility will find hundreds of mentions of it. 

HH, interesting. So, in summary, ditch the surge suppressing trailing socket and revert to a normal one. I will suffer from other mains powered equipment on the same circuit but only a dedicated main spur will help that. 

That's about it, yes. 

What conditions?
What front end components?
What do you mean by 'no input'?
What sensitivity are your speakers?
How loud is the hiss from say 1m away?
Why are you using a surge suppressor?

You need to provide relevant information if you expect people to help you.

In my experience, all Naim amps have audible hiss - all mine have had and still have. I don't find this a problem, but (OP), YMMV.

Certainly remove any Mains suppression or conditioning devices, straightaway. Naim amps not like them & dont need them. 

If I had a 202/200, I would be adding a NAPSC to the 202 first, then adding a Naim Pre Amp PSU - say a HiCap. 

Oh, yes - and do search & read this Forum, to see the answers given before, to much the same question.....

Hi,

Thanks, yes, hiss seems to be a common feature.

The fancy surge protector is no more, back to a simple gang socket for now.

Did you do a comparison both with and without the surge protector? If so then what did you think of the result?

My personal observation is that surge protectors that only use a VDR have no significant effect on sound.  However ones that use delta capacitors for suppression of differential noise in combination with a VDR (and possibly a CM choke as well) do adversely affect the sound.

My conclusion is that the problem lies with the capacitors not the VDR.

Mr Happy,

I am worried that I am hearing what I want to hear because the normal power strip seems to have more bass definition.  I will keep using it a while longer and see if my initial opinion sticks.

Years ago, before installing dedicated mains, I tried comparing different ways of connecting the hifi to the mains. I tried first to the wall socket, then to a decent quality trailing lead, then to a trailing lead with lightning protection.

The differences I heard were clear. The lightning protection trailing lead was worse followed by the ordinary trailing lead. Plugging directly into the wall was a lot better, I can't exactly remember the details as it was 16 years ago but I do remember it being the catalyst for installing dedicated mains.

When I finally installed the dedicated mains the sound was as if I had  upgraded all my olive kit. I can honestly say that it is one of, if not the best upgrade ive ever made. The jump in performance was huge.

I have limited options, being a rented house. I can run a lead from the amplifier to an adjacent outlet but it would share that outlet with other appliances. I think a decent trailing socket remains the best option for me. Interesting to hear how much it's changed your system.