AV Bypass on Uniti Atom

I am looking at switching things around when I move house and I would like to use the Uniti Atom with my AV amp so that the Atom drives the front two speakers. Is it as simple as connecting the RCA cables from the AV amp pre-out to the Analog Input on the Atom and choosing "AV fixed Volume" in the app? Or am I missing something ? 

Original Post

I use my Atom to drive the front two speakers in my AV setup and use AV fixed volume and preouts from the AV amp that is all that is needed. Be warned in latest firmware there is a bug that when switching to certain inputs from the analogue input with AV fixed volume on it does not switch it off until you mute it or hit volume. You get a very nasty shock if you forget this does it switching to internet radio all the time and have had it on Roon once. Naim are aware of it and hopefully will release a fix in the next firmware update.

Thanks for the feedback Simon and good to know my interpretation was right . Disappointing though to hear of yet another bug in the Uniti range. Just to be clear on the workaround , if you have been using the analogue input you have to mute it before moving to another input is that correct? 

Terrysmi posted:

Thanks for the feedback Simon and good to know my interpretation was right . Disappointing though to hear of yet another bug in the Uniti range. Just to be clear on the workaround , if you have been using the analogue input you have to mute it before moving to another input is that correct? 

You can do that or just remember to turn off the AV fixed volume before switching. It's hardly ideal but it stops you damaging your speakers and waking up the entire family and neighbours at midnight like what happened to me. 

SimonPeterArnold posted:
Terrysmi posted:

Thanks for the feedback Simon and good to know my interpretation was right . Disappointing though to hear of yet another bug in the Uniti range. Just to be clear on the workaround , if you have been using the analogue input you have to mute it before moving to another input is that correct? 

You can do that or just remember to turn off the AV fixed volume before switching. It's hardly ideal but it stops you damaging your speakers and waking up the entire family and neighbours at midnight like what happened to me. 

Or you can ask Naim for the downgrade back to 2.3 firmware as its not in that version. And to me sounds better anyway.

Aside from whether there may be a software bug causing a mismatch in signal levels, it is general good practice to reduce volume control to zero before switching any inputs to any amp - and hitting the ‘mute’ button is not a substitute because if there is a mismatched signal level it could blast at an unacceptable level upon unmuting. I’m not sure that I understand what the specific bug is with the Atom, but would this not address the problem? However, I am unfamiliar with the Atom, and this is irrelevant if this is some other input which maybe goes direct to power amp not through the volume control, as clearly then not applicable. 

I have never in all my days had to turn down volume when switching inputs and i dont intend on doing so now. The bug is it's not turning off AV fixed volume and playing everything back at the incorrect volume for a few seconds on switching to a digital input it did not do it prior to latest firmware and considering its only for analogue inputs should not affect digital at all but some how is.

SimonPeterArnold posted:

I have never in all my days had to turn down volume when switching inputs and i dont intend on doing so now. The bug is it's not turning off AV fixed volume and playing everything back at the incorrect volume for a few seconds on switching to a digital input it did not do it prior to latest firmware and considering its only for analogue inputs should not affect digital at all but some how is.

You may not have done, and may not have had a problem, and it may be nothing to do with the OP’s issue, but the fact is that IS good practice, and one day could save you or others from anything from a sudden blast making you jump to damage to a speaker. 

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