[Jon L]

coming out of the Eversolo USB into the SMSL su-9

Which Eversolo do you have? I was quite impressed by how Eversolo A6 ME was improved by upgrading the power supply to Beatechnik LHY linear PS. Try listening with some decent audio chain to this well-recorded video:

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[originalsnuffy]

So here is a wonky scenario. I noticed my Amazon HD material was being limited to 24 -48 on my iphone with a Cayin RU7 dongle.

I found this on the UK Amazon Music site: On iOS, disable the Alexa Wake Word feature in Settings to ensure playback through your DAC at the highest resolution.

I tried this but so far no joy. Any one else have this issue?

 

[rjacko01]

will give that a go Jon L, i'm just on the vanilla A6, but as always looking for that extra ounce of improvement

 

[brantome]

Even if that does help, you may find that the playback isn’t bit perfect as (despite what the amazon app may say) all tracks will be played at the max resolution your DAC supports - verify this on your DAC if you can as the Amazon Music app info isn’t to be trusted,

 

[originalsnuffy]

The bit perfect issue is of little concern compared to limited sampling rates

 

[Polky74]

If you have a DAP or an android phone with a dongle connected to it you can forget about high resolution music with Amazon... it has already been discussed many times here on this thread. Amazon doesn't have a bit perfect app, nor do they dream of entrusting their music to third parties (UAPP) as Tidal and Qobuz do. So Amazon Music remains non-HD... it's a shame but that's how it is.