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Enough noise reduction?

Curious at what point noise reduction could be considered "good enough".

Currently running a Denafrips Aeris ll DAC

Frequency Response: 20-70KHz -3dB

THD+N: 0.004%

S/N Ratio: 115dB

Dynamic Range: >119dB

Stereo Crosstalk: -124dB

 

Denafrips Hades preamp 

Frequency Response: 10-80kHz（-0.3dB）

THD+N: 0.00045%

S/N Ratio: 122dB

Dynamic Range: >121dB

Stereo Crosstalk: -110dB

Input Impedance: 60k Ω

Output Impedance: 200 Ω

Gain: Unity Gain 0dB

 

And Denafrips Hyperion amplifier 

Gain: 26dB

Output Power: 80w RMS per channel into 8ohms

Frequency Response: 10-80kHz（-2.2dB）

THD+N: 0.00078%

S/N Ratio: 125dB

Dynamic Range: >121dB

Stereo Crosstalk: -110dB

 

Currently all power cords are Shunyata Delta NR v1. 

So, the bug has bitten once again and I have been interested in experimenting with something different in power cords. Maybe Zavfino, Cullen or something of the sort. 

The one thing that has held me back at this point is with such low noise floors already on the components is there really any need to be concerned about giving up what additional reduction the Shunyata are providing. 

The Shunyata are very good. Just curious if there may be other brands out there on the used that may have better synergy or that I find more engaging with my set up.

 

bgpoppab
yage
401 posts
 

@holmz 

I'm still doubtful a lab power supply is used. It just doesn't make any sense. A lab 'bench' power supply provides DC, not AC. Also, these components are consumer products meant to operate off of standard household power. If you want to measure and test them, wouldn't you want to know the performance given wall power?

 

Anyway, I've done an online search which didn't uncover anything definitive. I sent an email off to Stereophile. I'll post an update if I get a response.

holmz's avatar
holmz
2,328 posts
 

@holmz 

I'm still doubtful a lab power supply is used. It just doesn't make any sense. A lab 'bench' power supply provides DC, not AC. Also, these components are consumer products meant to operate off of standard household power. If you want to measure and test them, wouldn't you want to know the performance given wall power?

No, I don’t think so.
One would want just the noise and distortion from only the unit.

But many would also want to know how the unit operates with dodgy power.

Since we do not know what different cities, countries, and individual houses power looks like, then the easiest is just use pure sine wave power.

terry9
2,354 posts
 

Do it right and install an isolation transformer. That protects your system, improves the sound, and takes power cables out of the equation. I've done the tests and I have three isolation transformers in the utility room, 'cause they tend to hum when they're working hard.

holmz's avatar
holmz
2,328 posts
 

Sort of like Jiminy cricket, they whistle when they work? @terry9 

terry9
2,354 posts
 

Just so. @holmz 

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