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Hypex Nilai500DIY Amplifier Review
- Thread starter amirm
- Start date
That entire page is bullshit. And full of typos.
One gem that was particularly hilarious.
If you're stupid enough to use a wooden case, sure.
gfinlays
Senior Member
That amplifier also uses a filthy great R-core transformer running at 50 or 60 Hz, with rectifier diodes generating 100/120 Hz output with a lot of high frquency hash.
Hypex doesn't state the switching frequency of the SMPS for the Nilai 500 but it will be very high. The standby supply on the board operates at 130 kHz. The high switching frequency means there's no interference in the audio band, so there's no need to shield stuff.
Shielding is only necessary if there's a problem without it. No point shielding for the sake of it.
Allright: so this guy is also a cheat: http://tweakaudio.com/EVS-2/Class_D_amp_mods.html
EdW
Senior Member
You’ve got it all wrong! For example, all the additional weight conferred by those extra lumps of metal will stop the amp from being slid of the table by extra special, extra heavy weight interconnects from the boutique audio industry.
Measured electrical performance improvements? - well save your money and use it to buy the next amp up in range
In that he is selling something claiming an audible benefit that doesn't exist - yes.
gfinlays
Senior Member
He's selling something that makes no audible difference with claims that it does, so yes, it would be fair to say that he is also a cheat.
Did you see my earlier post? There's nothing in the FFT noise spectrum above -136 dB. How can any tweak make an audible improvement?
Hypex Nilai500DIY Amplifier Review
Other than output power capability, probably nothing audible. Both are state of the art. From a measurement perspective, ... … which you will never hear as a difference. Artificially created cult. This is Audio Science Review. Many of us are engineers, and we discuss measurments. That is...
www.audiosciencereview.com
You'd have to listen at 136 dB SPL for that 60 Hz spike to exceed 0 dB. Do you think you'll hear the sound of a pin drop when you're clutching your ears from the pain?
At 0dB more like the sound of a feather landing on the back of a kitten.
gfinlays
Senior Member
Here's the gushing word salad review of the inaudible tweaks made to a VTV branded Purifi amp:
The NAD C298 to which this "review" refers was also measured by Amir and it achieved a very respectable and audibly transparent 100 dB SINAD.
For less than the cost of these "tweaks" you could buy a microphone, some software, the necessary hardware and do a pretty good room correction that would reap huge sonic benefits.
The hi-fi market is full of snake-oil peddlers and these tweaks are pure snake-oil. No more, no less.
The NAD C298 to which this "review" refers was also measured by Amir and it achieved a very respectable and audibly transparent 100 dB SINAD.
For less than the cost of these "tweaks" you could buy a microphone, some software, the necessary hardware and do a pretty good room correction that would reap huge sonic benefits.
The hi-fi market is full of snake-oil peddlers and these tweaks are pure snake-oil. No more, no less.
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Here's the gushing word salad review of the inaudible tweaks made to a VTV branded Purifi amp:
Cheater no, but wind merchant, yes.
Feyire
Active Member
I have done some of these modifications to my Hypex NC400s, and they have been running great for almost 4 years now.
Perhaps much to the disappointment of certain people, they do sound better than the stock product.
Perhaps much to the disappointment of certain people, they do sound better than the stock product.
gfinlays
Senior Member
And you can back your claim of improved sound with objective measurements?
I'm sure this claim was made with solid data behind it, tight ears-only controls, right?
EdW
Senior Member
These modifications are highly suspect. In particular just check out Mod2 where components on the Purifi amp board are changed. I’m just guessing but Bruno Putzeys is probably a better engineer than the crew at EVS. Not to mention warranty issues.Here's the gushing word salad review of the inaudible tweaks made to a VTV branded Purifi amp:
The NAD C298 to which this "review" refers was also measured by Amir and it achieved a very respectable and audibly transparent 100 dB SINAD.
For less than the cost of these "tweaks" you could buy a microphone, some software, the necessary hardware and do a pretty good room correction that would reap huge sonic benefits.
The hi-fi market is full of snake-oil peddlers and these tweaks are pure snake-oil. No more, no less.
As to the reviewer the final line gives the game away: overall rating 9.5 LPs.
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