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Excellent Power Supply Solution

In case you haven’t noticed, it’s very hard to find a good, affordable DC power supply from a U.S. dealer. I wanted a 12 volt 3.5 amp model for a Netgear router.  The quality linear power supplies are considerably more expensive than the router. But, then I stumbled upon an interesting product from Waveform Lighting. They offer a $49 DC power supply for strip lighting purposes. The 12 volt model can handle up to 10 amps and 100 watts. I do not know the technical details on how it works, but the description states “very low ripple and noise.” It also has overload voltage protection. The DC cable is 16 AWG wire.  A nice feature is that you can attach an audio grade power cable with a C7 connector. I used a Shunyata Venom cord. 

The unit did add a noticeable increase in sound quality. A little more clarity, more lifelike vocals and less harshness  in the upper treble. If you have a 12 volt modem, router or switch, give the Waveform Lighting DC power supply a listen. Here is the link: https://store.waveformlighting.com/collections/power-supplies-and-dimmers/products/filmgrade-12v-24v...
boakey39

Showing 5 responses by cakyol

cakyol's avatar
cakyol
940 posts
 
Just keep your digital gear & SMPS type psus and walwarts AWAY from your analog gear. That is all you need to do. They may affect your analog gear but they will have NO effect on your digital stuff, especially on your home router.

cakyol's avatar
cakyol
940 posts
 
lowrider57

And still, NONE of them affect the digital signals.
cakyol's avatar
cakyol
940 posts
 

First, I work at Broadcom switching products, so I do know what I am talking about.

Home routers & switches work at giga hertz frequencies and speed, which are WAY over ANY audio signals you are listening to especially if they are hard wired (ethernet), rather than using 11ac or 11ax wifi (which, depending on whether you are running at 2.4G band or the 5G band MAY be subject to collisions and may likely be a bit slower as a result).

The basic supply that comes with all boxes are absolutely fine. Since those work great even at frequencies 1000 times higher than your audio and still working perfectly fine, what you are noticing is nothing but the placebo effect.

Do not waste your money on snake oil.



cakyol's avatar
cakyol
940 posts
 
For the LAST TIME, the noise (up to a certain level) in the PS does NOT matter in digital circuits.

When are you guys ever going to understand that digital signals are NOT prone to a SMALL amount of noise. They ALL have error correction BUILT INTO THEM (Read Hamming codes, Convolutional codes, Viterbi decoding, Elwyn Berlekamp’s book on basic error correcting codes) into CPU interfaces, phy interfaces, memory buses, dma controllers, signal shaping in the air with wifi signals... everything.

The so called noise you hear about in switching power supplies are in the 200 - 800 kHz range and are WELL WITHIN the acceptable parameters of noise levels as far as digital signals are concerned.

For God’s sake, do you think packet switching would work flawlessly if a bit of noise affected it ? Since all home routers, END TO END ARE DIGITAL, at the router level, it WILL NOT make a difference.

For God’s sake, go & read about it.

cakyol's avatar
cakyol
940 posts
 
@boakey39,

We are talking about the DIGITAL world here.  A home router, carrying DIGITALLY streamed signals from the Internet, all the way to your home router and thru ethernet (or wifi) also being delivered to the DIGITAL interface of your streamer/amplifier/whatever.

Where things could go wrong is INSIDE your amplifier/dtoa converter, where the digital signal gets converted to an analog signal.  

But your router power supply is usually yards away from it and have nothing to do with the power supply of your analog gear.

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