Upgrade PS or battery users?

[hgo58]

It depends on what you consider to be a "bit". The digital output isn't "just 0s and 1s" - even computers don't deal with 0s and 1s - it's transitions in voltages. I take "bit perfect" to mean the correct number of transitions, but there are other factors to consider, such as thresholds of what's considered high and low, and the nature and timing of those transitions, which could potentially be affected by electrical noise or other power-related issues. Or maybe the included power supply doesn't provide enough power?
My point about the measurement was that how do people who like measuring things know that they're measuring the things that affect perceived sound quality? Twenty-odd years ago we were all persuaded to switch to diesel cars because they were better for the environment and our health due to lower carbon dioxide and monoxide emissions, but it turned out that we were measuring the wrong thing - it was the nitrous oxide and particulates that we needed to worry about.

You are right in with the transitions in voltages represent the binary data but if noise in this could cause a change to the overall SQ, then the CPU of the device would be in great problems.

A bad power supply can cause the digital system to crash and it can introduce noise in an analog output but it doesn't change the digital output. Not even the jitter.

This is not something you have to believe or not, it's how it works.

So talking about LPS or battery PS related to the digital audio stream don't make any sense.

If someone hear an improvement in the sound quality when changing power, it must be something else.

 

[hgo58]

A person wants to share his impression. Who are you to call him silly? Bit perfect or not. You should know how this discussions end. Is it boredom? Grow up.

Why do you reply at all then?

 

[JAB]

Why do you reply at all then?

I do not care what you or others know, feel or think to know about technical things. It is because I am so naive to believe even in your hindsight that this is every single time going to nowhere.

 

[JAB]

Post scriptum: Know very well that I will fail, but with a good conscience have at least tried.

 

[virnuls]

Why buy a switching power supply? Find the LHY-038 on AliExpress—it's a great option for testing. I tried it and still use it.

Thanks for the suggestion - I was thinking about power consumption (as it'll be plugged in all the time), but I'll check compare the figures and go for a linear model if there's not much difference. I have a Chord power amp with a switch-mode power supply, so they can have hi-fi applications.

 

[onlyoneme]

So talking about LPS or battery PS related to the digital audio stream don't make any sense.

This makes perfect sense. Power supply-generated interference can affect the operation of devices connected to the media used for digital transmission. Power supplies influence the stability of oscillators, and therefore contribute to jitter in isochronous digital transmission.

 

[Horsey]

Hi! I’m a new WiiM Pro user and I love it s far! It’s almost as good as my disc player and I think it could be better! Anyone using an upgraded power supply or a back up battery to run their WiiM. I tested it today and it only requires a couple watts to operate so maybe some kind of noise redirection would help? Just wondering…

It does and more people and industry people are sharing just that. I've switched from an LPS to a Talentcell 5v usb powered battery into a WiiM Pro and it's done great in my system. YMMV

The cost of entry to test though is very low.