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Sold my Nord Three 1ET7040SA Monos — Upgrading to 1ET9040BA MB MKII Flagship

I'd be impressed if anyone listening to explosions might even think they can tell one amp from another on an A-B test, or that it might matter! :)
 
Redacted said:
I'd be impressed if anyone listening to explosions might even think they can tell one amp from another on an A-B test, or that it might matter! :)
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When I switched from Denon 4700 internal amps to using the AVR fully in preamp mode with Monolith 7x AB amp and Purifi the clarity of big movie explosions was one of the few obvious differences that turned my head. At lower levels, it was harder to detect an amp difference with the upgrade. But when pushing volumes or huge strikes showed up in the sound track you could audibly hear the extra power and lower distortion.
 
Oh, OK, if at at such a high level that the amp itself is distorting, fair enough!
I've sent new batteries for your hearing aid in the post :) :)
 
amper42 said:
It's really hard to hear a difference between Purifi 9040, 7040 and 1ET6525SA amps with level matched listening tests when you don't know which one is playing. With a decent speaker they all sound very similar. Even with giant explosions in movie tracks each sounds amazingly clean. About the only way I can tell a difference is looking at their measurements or visually inspecting the modules. Hearing a consistent difference audibly is tough.

I find a quality input board paired with the Purifi amp like the custom-designed Boxem Stage III which utilizes a composite (OPA1612/OPA1656) design to achieve ultra-low noise and distortion can be just as important as the Purifi module installed.
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Its all the same unless you exceed capability.

Think what that means, why some hear differences where others do not.

Honestly.

:)
 
I call it 'dynamic contrast'.

Limits are not suddenly reached, a more capable amplifier will sound better even at levels a less capable one should be just as good, in theory.

Not here to argue..
 
Tone said:
I call it 'dynamic contrast'.

Limits are not suddenly reached, a more capable amplifier will sound better even at levels a less capable one should be just as good, in theory.

Not here to argue..
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So if I blind A/B test a 6525 and 9040 on a set of speakers that are not pushing the 6525 past its capabilities, the 9040 should sound better just because it is "more capable"?

Is that what you are implying?
 
Tone said:
Good question.
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I am asking you based on your own statement:
Limits are not suddenly reached, a more capable amplifier will sound better even at levels a less capable one should be just as good, in theory.
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If you want to dance around an answer because you know it doesn't support your "theory", that is OK too.
 
Buckeye Amps said:
So if I blind A/B test a 6525 and 9040 on a set of speakers that are not pushing the 6525 past its capabilities, the 9040 should sound better just because it is "more capable"?

Is that what you are implying?
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Can't do that for an A-B test, cause it has to be level matched.
In this case (assuming that both of the amps have their theoretical thermal management at check all the way to their rated so it can be continuous) one wouldn't know where to start to be fair to both with demanding material (classical with 20dB peaks for example)

It will either be tough for one or have the other one cruising.

Tricky at the end.
 
Tone said:
Does it matter what I think, in theory?

Do you know all the facts?

Why many leave.

Cheers.
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When your theory goes against established science, on a science based forum, the onus is on you to prove it. Until then, of course it will be called out to make sure others reading understand the shortcomings.

Especially when it is a manufacturer in the audio space peddling said theory.
 
Sokel said:
Can't do that for an A-B test, cause it has to be level matched.
In this case (assuming that both of the amps have their theoretical thermal management at check all the way to their rated so it can be continuous) one wouldn't know where to start to be fair to both with demanding material (classical with 20dB peaks for example)

It will either be tough for one or have the other one cruising.

Tricky at the end.
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The question isn't about comparing the two amps at levels that are demanding to both, the question is about at a level that is not demanding to the lesser powered amp, will there be an audible difference because the more "capable" amp has better dynamics/headroom/etc.

So yes, you can level match them and test.
 
Buckeye Amps said:
The question isn't about comparing the two amps at levels that are demanding to both, the question is about at a level that is not demanding to the lesser powered amp, will there be an audible difference because the more "capable" amp has better dynamics/headroom/etc.

So yes, you can level match them and test.
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Still unfair, as even at lower levels the lesser one can theoretically face some struggle.

Imagine a big treated room with 4-5 meters listening distance playing Scheherazade for example, were the trick is not how loud you go on peaks but how loud it needs to be for the silent parts to be audible (assuming a fairly silent room of course)

It's not that simple as you see below, there's a range from 55dB to +100dB to cover:



1778266880415.png


A THD+N vs level COULD be useful for the envelop to play, but still.
 
Sokel said:
Still unfair, as even at lower levels the lesser one can theoretically face some struggle.

Imagine a big treated room with 4-5 meters listening distance playing Scheherazade for example, were the trick is not how loud you go on peaks but how loud it needs to be for the silent parts to be audible (assuming a fairly silent room of course)

It's not that simple as you see below, there's a range from 55dB to +100dB to cover:



View attachment 530989

A THD+N vs level COULD be useful for the envelop to play, but still.
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Sokel said:
Still unfair, as even at lower levels the lesser one can theoretically face some struggle.
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What I'm asking.
 
Tone said:
What I'm asking.
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Conditions is the death of blanket statements.
Anything can be ok at its intended use and conditions.

Hook them up to 100dB sens horns and let them cruise.
Hook them up to an arc-welder demanding amp speaker, 80dB sens at a big room and watch the lesser one cry.

So...
 
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