Why Pay More For Purifi 9040 vs Hypex NCX2k?

[jmdesignz2]

Why Pay More For Purifi 9040 vs Hypex NC2k?

AFAIK the fidelity difference will be inaudible

But wouldn’t the hypex NC2k be way more dynamic and capable of higher spl before clipping distortion than the PURIFI 1ET9040BA Monoblock (2nd Gen EIGENTAKT)?

Buckeye Specs:

• 2000 watts @ 2 ohm
• 2500 watts @ 4 ohm
• 1600 watts @ 8 ohm
• (per channel, 1kHz, 1% THD)

Fidelity​

• S/N: 133dB
• FR: 0 - 50KHz
• THD: 0.002% (1250W, 4Ω, 20Hz-20kHz)

Versus

• 1400 watts @ 2 ohm
• 750 watts @ 4 ohm
• 375 watts @ 8 ohm
• (per channel, 1kHz, 0.1% THD)

Fidelity​

• S/N: 140dB
• FR: 0 - 80KHz
• THD: 0.0001% (400W, 4Ω, 20Hz-20kHz)

 

[GS430man]

Haven't seen 3rd party measurements on the NC2k, but it looks interesting.

Suggest you also evaluate power consumption in idle and standby.

 

[MGJ]

Here is a review of a NC2K amp:

NC2K, Apollon

 

[jmdesignz2]

Here is a review of a NC2K amp:

NC2K, Apollon

Thanks. That was 5 years ago and different output buffers? Buckeyes shows better specs

 

[Vincentponcet]

Which loudspeakers? Sensibility and max power handling ?

Try to calculate that peak that you are looking for

SPL Calculator

On the reasonable peak SPL to have in audio, I see conflicting values.

Some says, in home, you don't go beyond 80db spl continuously, add max 20db peak and you are at 100db peak spl. In THX home theater, standard listening is at 82 db SPL C and 105 dB SPL peak for the loudspeakers and 115db SPL peak for the LFE.
So I'm wondering if we need 1000W even at peak. And not a lot of loudspeakers support that anyway.
I'm even wondering if which case you need more than the purifi 1et6525sa or the hypex ncx500.

Why Pay More For Purifi 9040 vs Hypex NC2k?

AFAIK the fidelity difference will be inaudible

But wouldn’t the hypex NC2k be way more dynamic and capable of higher spl before clipping distortion than the PURIFI 1ET9040BA Monoblock (2nd Gen EIGENTAKT)?

Buckeye Specs:

• 2000 watts @ 2 ohm
• 2500 watts @ 4 ohm
• 1600 watts @ 8 ohm
• (per channel, 1kHz, 1% THD)

Fidelity​

• S/N: 133dB
• FR: 0 - 50KHz
• THD: 0.002% (1250W, 4Ω, 20Hz-20kHz)

Versus

• 1400 watts @ 2 ohm
• 750 watts @ 4 ohm
• 375 watts @ 8 ohm
• (per channel, 1kHz, 0.1% THD)

Fidelity​

• S/N: 140dB
• FR: 0 - 80KHz
• THD: 0.0001% (400W, 4Ω, 20Hz-20kHz)

 

[Mort]

Hypex is more SPL for the buck, yes.

There are differences aside from price. Tested, purifi is usually slightly higher sinad. It also handles low impedance amps better.

 

[Vincentponcet]

Hypex is more SPL for the buck, yes.

There are differences aside from price. Tested, purifi is usually slightly higher sinad. It also handles low impedance amps better.

At 5w it is slightly better, at 100-200W that's another league. Amir didn't tested the 9040 yet afaik, an ncx500 provides 20db better sinad at 200W than nc2k.
As the question was about peaks distortion, that could be considered.

 

[MGJ]

Why Pay More For Purifi 9040 vs Hypex NC2k?

AFAIK the fidelity difference will be inaudible

But wouldn’t the hypex NC2k be way more dynamic and capable of higher spl before clipping distortion than the PURIFI 1ET9040BA Monoblock (2nd Gen EIGENTAKT)?

Would the difference in distortion specs be audible? I don't know.

Using the published power specs the Hypex amp has 6.3dB more headroom at 8ohms and 5.2dB more headroom at 4ohms.

 

[Vincentponcet]

Would the difference in distortion specs be audible? I don't know.

Using the published power specs the Hypex amp has 6.3dB more headroom at 8ohms and 5.2dB more headroom at 4ohms.

Headroom against what. The question is not having more power but if the power under a threshold of distortion is sufficient to reach your expected peak SPL, and if your loudspeaker can handle 2000 watts, because if not, the amp distortion will be the least of your concerns.

 

[TurtlePaul]

AFAIK the fidelity difference will be inaudible

That is a quote you can ride all the way down to $200 amps from Fosi / 3e / Aiyima. Where you want to stop on that train is rather arbitrary and there are amps with a little more SNR, a little better distortion and a few dB more power all the way from <$100 to >$3,000.

 

[jmdesignz2]

That is a quote you can ride all the way down to $200 amps from Fosi / 3e / Aiyima. Where you want to stop on that train is rather arbitrary and there are amps with a little more SNR, a little better distortion and a few dB more power all the way from <$100 to >$3,000.

Fidelity’s difference within an amps limited range is one thing

Dynamic range and characteristic synergies with ones system and listening materials and sources is another

Currently I’ve calculated the cost benefit of going higher in amp wattage likely has hit diminishing returns for my particular situation

TLDR. NCX500 monoblocks are probably going to be good for my purposes at the moment