愛樂迷 wrote:
網路上吵 有效？沒效(恕刪)
如果真這麼簡單
會有這棟大樓嗎
借回去
有人說有效果
有人說沒有
是不是又回到原點
各說各話………
訊源：Accuphase DP-70V
管機：Melody SP9-R
訊號線：TaraLabs The One
喇叭線：Shark 406、ATL
這位網兄的試用心得可看看
https://www.dcard.tw/f/av_equipment/p/239505651
https://alpha-audio.net/background/why-a-good-switch-does-matter-for-streaming-audio/2/
What about data?
Some enthusiasts sometimes say that the data is corrected over the network, so no errors occur and therefore there can be no audible difference. That no data errors occur with proper transmission is absolutely correct. We have already checked this regularly. But that’s not where we need to look… Our reasoning was simple: we hear a difference, it is not in the data, so where is it? What remains is noise….
What does this all say?
Noise is definately not something we want to introduce into a good hi-fi system. Noise creates all sorts of issues: a veil, unrest, loss of definition. Every manufacturer tries to eliminate noise from his or her design. If we then introduce noise again with a switch behind the streamer, we’re just being foolish.
When audiograde switches made their appearance, we did frown, to be honest. But after some trials with fiber/glass and good power supplies, we also heard a difference. And this is reproducible. Are they shocking differences? We do not think so, but the fact is: sometimes small steps are also important.
Who looks at these measurements, will see that there are just differences in performance. And that both the Cisco with linear power supply and the Paul Pang single switch perform well. In terms of common mode better than the English Electric and NuPrime which are just 10 dBm above it. In terms of price, these four are not that different.
By the way, what is funny is that the English Electric and NuPrime are the same (just like the Silent Angel… all made by Thunder Data) except for the power supply…. The NuPrime measures differently (slightly better) anyway, proving that power supply has a direct impact. The Cisco with switch mode and a linear power supply is the same story.
What also stands out is that the Paul Pang Quad measures the same on the power supply side as it does on the switch side. Very good isolation, in other words. A negative outlier is – in our opinion – the SOtM. The price is not in proportion to the performance. We attribute this purely to the cheap switch mode power supply that they provide.
Quick win
What we recommend for a “quick win” within a standard network, is to place a decent switch (dLink / Cisco / Netgear) close to the streamer. A decently built one already filters better than a cheap brand. Also connect a good power supply to the switch. Think of a decent Ifi power supply, sBooster or if you want to go really crazy, a Hypsos. You can hear these effects in our Live Switch Test.
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