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WiiM Ultra Streamer Preamp Review

Rate this streamer/DAC/Preamp:

  • 1. Poor (headless panther)

    Votes: 5 1.2%
  • 2. Not terrible (postman panther)

    Votes: 43 10.4%
  • 3. Fine (happy panther)

    Votes: 161 38.8%
  • 4. Great (golfing panther)

    Votes: 206 49.6%

  • Total voters
    415
For a detailed overview of my experiences with the Umik-1 and WiiM RC, you can find my latest measurements and analysis here: https://audiosciencereview.com/forum/index.php?threads/kef-ls60-room-correction-showdown-rew-mmm-vs-wiim-ultra—a-data-driven-analysis.59795/post-2194722
Once WiiM implements support for calibration files, I believe it will become a remarkably capable and cost-effective room correction solution—almost too good to be true at the WiiM Ultra’s price point. Even without a calibration file, WiiM RC is already performing quite well below 300 Hz, but using the iPhone 13 microphone for correction remains underwhelming, often doing more harm than good at both lower and higher frequencies.
I have imperatively to buy an Umik, I don’t think my iphone 16 has better mic than your 13.

For the couple of modes I corrected for instance may work, but I believe is a good investment.
 
Why? I’m curious…
(Have an Ethernet port on back panel, look at pictures in website)
Eh, not worth mentioning it, I just believe the radiation is bad for us, I have a streamer without LAN, I never use it for internet radio, I only use the USB ...
 
Eh, not worth mentioning it, I just believe the radiation is bad for us, I have a streamer without LAN, I never use it for internet radio, I only use the USB ...

Hope you've also banned microwave ovens from your home - also mobile (cell) phones. :p
 
Eh, not worth mentioning it, I just believe the radiation is bad for us, I have a streamer without LAN, I never use it for internet radio, I only use the USB ...
Ok, no worry for you in this case, not only you can plug directly the WiiM to the router but also the radio player works perfectly.
 
Hope you've also banned microwave ovens from your home - also mobile (cell) phones. :p
Humm, microwave ovens have other danger inside…

1736704416868.jpeg


My hand after treacherous attack of a cream of vegetables heated in the MW oven…
 
Humm, microwave ovens have other danger inside…

View attachment 420586

My hand after treacherous attack of a cream of vegetables heated in the MW oven…
For a moment there, i thought you'd somehow managed to bypass the interlocks and microwave your hand :eek:
 
For a moment there, i thought you'd somehow managed to bypass the interlocks and microwave your hand :eek:
Another possible explanation, but in fact I was happily watching my soup wandering while thinking how safe I was protected by the Faraday cage that surrounds the oven… seconds later when I hold the cup, I open involuntary the hand because overheated recipient and throwing the content over the other hand.

Curiously in my job (physiotherapist) we have a microwave machine to heat patient’s muscles and other parts of their bodies. Is rarely used this days, replaced by capacitive and resistive electric transfer (CRET therapy).
 
thinking how safe I was protected by the Faraday cage that surrounds the oven
That cage leaks like a sieve. As evidenced by the fact that the audio streaming over wifi to my airplay speaker shuts down when the microwave is running. Hence my comment above. :)
 
Eh, not worth mentioning it, I just believe the radiation is bad for us, I have a streamer without LAN, I never use it for internet radio, I only use the USB ...

Best stay out of the sun as well :rolleyes:
 
That cage leaks like a sieve. As evidenced by the fact that the audio streaming over wifi to my airplay speaker shuts down when the microwave is running. Hence my comment above. :)
I didn’t know that this could happen, but when the microwave machine is working the ancient cathodic rays computer monitors had a lot of strange diagonal lines and moving patterns on the screen…

I’m curious, Airplay works receiving and emitting from the iphone/ipad or is the router that emits to the device?
 
That's not normal. It might be wise to get your microwave checked out.
My WiiM gives me an electric static mini-shock each time I touch it… it also gives me some vibration when I pass the finger over the box.

Someone suggested me that my electric network is not properly grounded, but my monitors have 3 pin mains cable and don’t do that.
 
My WiiM gives me an electric static mini-shock each time I touch it… it also gives me some vibration when I pass the finger over the box.

Someone suggested me that my electric network is not properly grounded, but my monitors have 3 pin mains cable and don’t do that.
Are you in a country that you can plug mains both ways?If yes try the opposite.
You can measure the voltage on the case l with a DMM too if you have one,let me know if you do to tell you how.

Edit:I just saw it uses a two-prong,scrap the above.
You shouldn't have that.
 
My WiiM gives me an electric static mini-shock each time I touch it… it also gives me some vibration when I pass the finger over the box.

Someone suggested me that my electric network is not properly grounded, but my monitors have 3 pin mains cable and don’t do that.
there were serious problems of this type with the very first amp ( with machine reboots in case of discharge) (and strange ones with the pre-series of the ultra power supply) while class2... not normal...
seems to have been rather resolved afterwards... is your wiim from the very beginning of marketing?
 
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That's not normal. It might be wise to get your microwave checked out.
It's absolutely normal. All microwave ovens leak. It is massively attenuated from what is inside, but comparable in level to the wifi, and at the same frequency (2.4GHz). Bear in mind it is not a full faraday cave. There is a slot - at least all around the door.


I’m curious, Airplay works receiving and emitting from the iphone/ipad or is the router that emits to the device?
Over the wifi, so to the wifi access point/router and then back out again.
 
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Are you in a country that you can plug mains both ways?If yes try the opposite.
You can measure the voltage on the case l with a DMM too if you have one,let me know if you do to tell you how.

Edit:I just saw it uses a two-prong,scrap the above.
You shouldn't have that.
Again - that can be quite normal. If you have class II (non grounded equipment), then any leakage (normally capacitive) of noise (including noise from the mains supply) goes to the chassis and has no-where to drain to. It can be quite a significant ac voltage, but very high impedance, so all it can do is tingle. There is no current capability behind. it.

Though it can be particularly strong when you have a bunch of class II devices connected together, and you get the combined leakage current of them together. My AV System with TV, AVR, Settop box, DVD player - all connected together, would be quite uncomfortable when I unplugged the antenna cable with a metal plug. In the day's when I had an antenna cable. You only need one class I (grounded) device in the mix, and you never see it. Everything drains to earth through that.

EG:
 
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Again - that can be quite normal. If you have class II (non grounded equipment), then any leakage (normally capacitive) of noise (including noise from the mains supply) goes to the chassis and has no-where to drain to. It can be quite a significant ac voltage, but very high impedance, so all it can do is tingle. There is no current capability behind. it.

Though it can be particularly strong when you have a bunch of class II devices connected together, and you get the combined leakage current of them together. My AV System with TV, AVR, Settop box, DVD player - all connected together, would be quite uncomfortable when I unplugged the antenna cable with a metal plug. In the day's when I had an antenna cable. You only need one class I (grounded) device in the mix, and you never see it. Everything drains to earth through that.

EG:
I know it is,it doesn't even register in an amperemeter.
It can screw measurements big time though,both class I and II devices.

You see mains noise which is normally buried in the FFT's 130-140dB depths rising to even -80dB.
Inaudible of course but not good for the optics if you have REW's RTA almost always on :cool:
 
My WiiM gives me an electric static mini-shock each time I touch it… it also gives me some vibration when I pass the finger over the box.

Someone suggested me that my electric network is not properly grounded, but my monitors have 3 pin mains cable and don’t do that.
If you want to check your outlets, hardware stores (and Amazon) have wall outlet checkers for around $10 which will quickly tell you if the outlet is properly wired and grounded. Very easy to use -- just plug in and see the results.
 
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