As several of us have posted inadvertently or in response to other queries about new firmware in the incorrect threads, time to start a new more specific one for the products above.
Probably best for Mu-so/Mu-so Qb owners to have a separate one if needed.
Background:
Naim released 2.3.1 on March 19th to address HDMI S/PDIF issues:
https://forums.naimaudio.com/to...casional-dropout-fix
This ruined my Nova's sound - made it thin, lifeless and unengaging. A couple of others felt the same, others were more positive so fair to say inconsistent experiences. Some found a factory reset helped, others didn't.
I remain puzzled why firmware 2.3.1 was released when we then got 4.6 for older streamers and 2.6.9508 for the new Uniti series (well Nova anyway - I assume Atom/Star are the same) only a fortnight later, though presumably there are good reasons:
https://forums.naimaudio.com/to...o-streaming-products
I had maybe a 10 day gap between listening to the (to me) awful 2.3.1 (19th March 2.3.1.9464 - app screen grab) and 2.6.9508 (released 4th April), and only did limited before/after listening. They didn't seem too different though perhaps the latest is not as harsh sounding, and while I think 2.6.9508 the app currently shows is a little better, the sound of the Nova overall just seems lacking compared to a few weeks ago before 2.3.1.
It simply doesn't engage me in the way that 2.3 (8574) did before I installed 2.3.1.9464 on 20th March.
Until a few days ago I only played digital audio on the Nova - from WD NAS, via rear USB, Roon from Mac Mini and a lot of Qobuz playback using Chromecast built-in.
Having listened to the 4th April firmware for several days now it is undeniably quite detailed, but just sounds fairly thin and uninvolving comapred to the Nova prior to 2.3.1. Another poster Obsydian sums it up saying it seems to have 'lost its mojo'.
In the last few days I've hooked up my old Linn LP12 via Analogue 1 input and it's a much better experience than lossless SD/HD digital audio from the LAN or streaming apps.
It's not that it sounds bad/distorted or anything like that, just that it no longer seems engaging/involving in teh way it did before.
Some recommendations from others in the Music Room threads turned up some fantastic tracks/artists which really showed what the Nova is capable of - these same tracks now seem rather lacklustre and don't thrill in the same way - many things just seem like background music not engaging audio.
Admittedly all this is highly subjective, but for those of us who feel our devices sound worse it is all the more frustrating due to the apparent inability to revert to older firmware which we were happy with sonically - placebo effect or not, without being able to go back to compare we'll probably remain convinced something has deleteriously affected our device's sound quality.
Please provide your comments based on your experience with the latest updates.
I appreciate there may be some known issues others have I have not mentioned.
Posted on: 28 April 2018 by EoinKav
After reading the positive results form factory resets (which I'd done before), I decided to try the 2.6 update again for a 3rd time.
Installed it, factory reset ..... dis-improvement from 2.3 at lower volume.
factory reset a further time .... still no improvement.
Reverted again to 2.3 and I'm sitting here at the breakfast table listening to music which is much more alive, separation/soundstage and base at my normal 24 volume.
i'm sorry ... in my case the FW2.6 sound sounds higher pitched (too much treble and not enough bass) compared to what I've been used to listening to on the Atom.
I've said it before ... 2.6 is too tiring on my ears to listen to, the urge to switch it off after a few minutes is overwhelming ... something I've never experienced with my Mu-So's or Atom before.
I'm staying on 2.3 until Naim sort this out.
Posted on: 28 April 2018 by Alley Cat
A few thoughts.
While some of us didn't like/initially like 2.6/2.3.1, it's easy to say and quite understandble to everyone that this might just be down to individual sound preferences in the context of a given system.
What's niggling me however is that most negative experiences have not been subtle changes in perceived audio quality but huge night/day differences in overall tonal balance which I'd assume would have been quite obvious to the 'listening panel' too - if that group did not see a big tonal difference, then I'd have to wonder if that's because 2.3.1/2.6 didn't install properly for a subset of owners who had negative reactions? Given several users (not me) downgrading/upgrading and eventually finding it worked well, or simply a unit just sounding poor then 'stabilising' and sounding fine again, there's either something peculiar going on or we're all delusional.
I think one of the 4.6 threads suggested that some updates were incremental not full - so for example if you were on 4.2, skipped 4.4 and went to 4.6 you'd not get Tidal as 4.4 installed the support for that.
By extrapolation I suspect there might be some aspects of updating that could be non-reversible if some features are modular. I may be wrong but certainly possible.
2.3.1 was the real bad version sonically for me (2.6 better but strikingly different to 2.3) - as I've said before I never took note of the DSP version of 2.3.1, maybe the same as 2.6, maybe not. Could the 2.3.1 update have installed something that caused sonic detriment that is not overwritten by 2.6? If so, those who went directly from 2.3 to 2.6 might have skipped that negative effect entirely. Obsydian started a thread after 2.3.1 and myself and a few others had the same experience. This thread came later after we all started cluttering the 4.6 type threads with comments on the newer Uniti machines.
There's also food for thought about the potential transient nature of services such as Spotify/Tidal/Chromecast when supported by firmware - those companies ony have to change their APIs for services to cease to function in devices going forwards if a company no longer supports a legacy product and cannot offer updates for continued functionality. Equally Tidal etc might go bust and the service is no longer there. I'm sure manyhave seen older DVD/BluRay players with 'apps' lose for example YouTube functionality when APIs changed. This is not intended as any criticism of nam products it's just the reality of internet services that may change or cease to be available.