Test WIIM pro+ with different power supplies
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D1N0
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Asr is not an authority. They are measurement biased freaks. Experience first. Measurements are a tool, not an end.
If a PSU provides unstable voltage, not enought current, high noise, deviations in the supply, and chucks noise back on the circuit this can be measured and tested for. In far more repeatable, accurate method without user bias. The results are able to be printed out, and others are able to peer review test them also.
You listening to it will none of those, it would be like "this £2000 fuse in the plug made it sound much better after I spent my hard earned money on this, so it must do something"
D1N0
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It is a very old trick to misrepresent my argument. I said measurement was a tool, not that it does not matter.
When an audio designer or speaker for that matter, they all use computer modeling and when produce they measure them. All these measurements devices serve them as their building block. Now, it may have measured well but the question will every ear like super clean, neutral and polite sound? I’m one of them doesn’t like neutral and polite sound and like my sound to be spice on certain frequency to be boost and that’s where eq in wiim I used. Everyone has its own preference and there is no right or wrong to be criticized by others. Everyone knows tube amp has high distortion yet I like how tube sounds. Let your ear be the final judgement.
There two types of people based on asr straight measurements or subjective from other reviewer like cheap audioman or Andrew Robinson just to name a few.
Yes, you're right.
I like a sound that has a punch in the low frequencies and just a little bit of brightness in the high frequencies.
And, flat and accurate audio has the advantage of being easier to adjust than non-flat audio.
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Given the definition of high fidelity ‘the reproduction of sound with little distortion, giving a result very similar to the original’, maybe those who do not like a clean and neutral sound should admit that they are not interested in hi-fi.
I can attest that the PSU can make a huge difference. It did with my Chromecast audios, unexpectedly. But I wasn't buying audiophile PSUs.
4 years ago, wanting fewer wall warts and better cable organization, I tried connecting two sets of 6 CCAs each to a 6-port USB charging station made by Amazon under the AmazonBasics brand, and no longer available for sale, but my order history shows each station cost $27.99.
There was horrible hiss and ground loop noise in some of the CCAs, which I could never resolve, except by switching back to 6 individual USB power supplies.
Maybe an electrical engineer can explain to me why this happened ?
I still have those two 6-port charging stations. Maybe I'll try them with the WiiM Pro Plus also after I replace those 12 CCAs with 12 Wim Pro Plus (1 done, 11 to go).
4 years ago, wanting fewer wall warts and better cable organization, I tried connecting two sets of 6 CCAs each to a 6-port USB charging station made by Amazon under the AmazonBasics brand, and no longer available for sale, but my order history shows each station cost $27.99.
There was horrible hiss and ground loop noise in some of the CCAs, which I could never resolve, except by switching back to 6 individual USB power supplies.
Maybe an electrical engineer can explain to me why this happened ?
I still have those two 6-port charging stations. Maybe I'll try them with the WiiM Pro Plus also after I replace those 12 CCAs with 12 Wim Pro Plus (1 done, 11 to go).
I don't think that proves the difference in sound quality between a "cleaner lower-cost PSU" and a "more expensive and more cleaner PSU".
It is conceivable that a power supply of extremely poor quality, such as the USB of a PC, may degrade the sound quality.
No, it doesn't prove more expensive PSUs could be better. There are usually diminishing returns, and the audio quality probably plateaus at some level.I don't think that proves the difference in sound quality between a "cleaner lower-cost PSU" and a "more expensive and more cleaner PSU".
It is conceivable that a power supply of extremely poor quality, such as the USB of a PC, may degrade the sound quality.
My experiment shows what can happen with a low-quality PSU though - it can definitely make the audio worse.
I personally think the PSU that came with the WiiM Pro Plus is fine. I doubt I could hear the difference between two PSUs other than when one is obviously faulty.
Yes. The case you posted was probably not caused by the PSU, but by connecting multiple devices to one PSU. Although I can't explain its cause.
You may have already read this, but this test was interesting.
Impact of AC Distortion & Noise on Audio Equipment
This is an ASR research project to see what impact AC noise and distortion has on performance of audio equipment. I have been wanting to write this article some three years ago and finally getting a chance to do the testing and release it. As you will see, the heart of this study is a special...
www.audiosciencereview.com
Vangelo51
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I added this video review here cos guy tested with Wiim supplied power supply and a LPS (Allo Shanti 12.30 minutes in). As a streamer, using digital output, SQ matches the Eversolo DMP-A6. Praise indeed!
YouTube Wiim Pro Plus Review
Rest of review interesting too......
YouTube Wiim Pro Plus Review
Rest of review interesting too......
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