Thanks for that summary. Do you think ‘Instant on’ might have been wording that was devised when it was thought that the amp would have auto on? Clearly it was thought that would be a function at some point as it was written into the manual. With its current functionality, ‘instant on’ doesn’t seem appropriate.
No idea 
I’ve worked for a variety of engineering firms, software and hardware, mistakes and misunderstandings surely happen. I would be surprised if something like that got through though. Particularly given the small form factor and that packaging all the functions in was likely a high priority issue from the start. 110db likely knows for sure, but I’m hoping he doesn’t give us too much insight into how Naim work, I’m happy that some of the background is just magic 
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I think the ambiguity was a deliberate design choice to
- Provide a quirk that endears itself to owners and potential owners alike.
- Give forum dwellers something to discuss
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Hi @robert_h,
The quick answer is that the ‘instant on’ switch will enable/disable the music sense auto-standby function.
Going deeper
The Nait 50 has two modes; ‘on’ and ‘standby’.
When it is ‘on’:
- Ready to play music.
- The main toroidal transformer PSU is on
- EuP 0.5W SMPSU is off (better for sound quality)
When is in ‘standby’
- It will not play music
- The main toroidal transformer PSU is off
- The 0.5W SMPSU is on and keeping the power button awake
- The amplifiers have no power
The rear panel ‘Instant on’ switch has two positions; ‘on’ and ‘off’
When it is set to ‘on’
- If the Nait is on it will stay on
- The music sense circuits are turned off
- If the Nait is ‘on’ and the front panel ‘mains’ button is pressed it will go to standby (as detailed above)
- If the Nait is in ‘standby’ and the front panel ‘mains’ button is pressed it will turn ‘on’ (as detailed above)
When it is set to ‘off’
- If the Nait is on it will stay on if the music continues
- The music sense circuits are turned on and will put the Nait into standby after 15 minute of silence
- If the Nait is ‘on’ and the front panel ‘mains’ button is pressed it will go to standby (as detailed above)
- If the Nait is in ‘standby’ and the front panel ‘mains’ button is pressed it will turn ‘on’ (as detailed above)
Cheers
Steve
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What is the soundstage width and depth like on the NN50 ?
And how does it compare to the SN3?
On the Nait 50 performance, I hadn’t quite twigged at first (although I think a few folks did mention) that the Nait 50 is similar to the original in that the midrange is particularly transparent and clear.
Overall, I think the best thing about it is that it’s so well balanced. I supposed being in control of phono stage, pre- and power amp design helps, but even so, it works really well as a whole and sounds just right.
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Yes - I’ve seen that. Doesn’t really comment on soundstage.
To my mind this is where the SN3 falls over relative to its competitors.
Perfect, thanks!
Thanks Steve, so standby from an amplifier perspective, is effectively off. The standby SMPS only enables the logic circuitry to bring the amp out of standby when the power button is pressed, powering up the linear supply, disabling the SMPS in the process and is now ready to play music.
Mine is warming up nicely after being turned off for a week whilst I’ve been away. Sounding excellent again already 
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Tonight with the album “Ultimate Santana”, it’s wonderful. And of course it plays Nait 50, Qutest and the outstanding ATC SCM7v3.
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Hi Xantores, I’ve already compared the Nait 50 with my 282/SCDR/250DR on the B&W 805d3. I believe I can live with the Nait 50. It has no issue to drive the B&W at all. Actually I prefer its photo input (with SUT) to my Linn Uphorik.
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As a matter of interest, Bandit, which SUT are you using with your NAIT 50?
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Yes I agree Bandit
Currently using the Nait 50 with fully loaded LP12ARO/superline/supercap dr/ Armageddon and Neat Petite 30’s
Using the SN3/HICAPDR before the Nait 50
That combo sitting idle as we speak , dare say I could live with the little one
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Hi Graham, I’m using only Sony HA-T10. They are pretty good.
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I see my 282/sc/250 setup will sit idle for a while. 
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It’s a cracking little amp isn’t it.
I’m really pleased with mine and glad I eventually decided to grab one.
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Instant on keeps it in full power mode. Pressing the standby button just turns off the logo.
Never mind I see Steve answered your question.
Maybe, but I’ve found that it really benefits from the optional external power supply…
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I’ve often thought about a Hi Cap DR But a very good friend of mine that already had one when he split his separates didn’t like it as it was more hi fi and not so musical and I don’t have a spare shelf so didn’t bother.
I really can’t think of needing it here as the Solo box does a great job with bags of headroom.
Itch 
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