How long does musical signal hold at 0 dbFS?> Near 1 kW of full power can be easily achieved
How long was it able to sustain this?
Well, anyone can but it is not proper to pick the top part of the clipping point and declare that as the power of the amplifier:4. Anyone can read graph and find cut-off point they want to use. That's why I upload Data with full details not just graph. Anyway thanks for suggestions.
That doesn't make it proper. if someone can give me the link and confirm this is confidential information, I will delete it.1.You can find it easily on ASR
The amplifier is way beyond any reasonable parameter of operation once the distortion goes nearly or completely vertical.
We should also note that the AP test above only tests the amp for a short period until it captures the THD+N. This can be a fraction of a second. So you what you see is a more momentary power level than real. This is why for example amps can produce power that exceed the power supply rating. The reservoir caps produce enough power for this test but can't maintain it consistently.
So to the extent you like your measurements to be comparable to mine -- especially since you post one of mine as comparison -- fairness and proper analysis would call for applying the same metric. Or none at all. Putting the cursor at the point you did is just not proper and helps marketing messages of companies that exaggerate power levels this way.
But if the manufacturer specify the max power as 1% THD and he clearly states it, he is not exagerating power level for marketing, he is just using a different treshold that your's and there is unfortunately no firm standard but it is a common number.Well, anyone can but it is not proper to pick the top part of the clipping point and declare that as the power of the amplifier:
No one would be happy listening at that level of distortion. The amplifier is way beyond any reasonable parameter of operation once the distortion goes nearly or completely vertical.
We should also note that the AP test above only tests the amp for a short period until it captures the THD+N. This can be a fraction of a second. So you what you see is a more momentary power level than real. This is why for example amps can produce power that exceed the power supply rating. The reservoir caps produce enough power for this test but can't maintain it consistently.
So to the extent you like your measurements to be comparable to mine -- especially since you post one of mine as comparison -- fairness and proper analysis would call for applying the same metric. Or none at all. Putting the cursor at the point you did is just not proper and helps marketing messages of companies that exaggerate power levels this way.
Would a cable like this do the job to provide trigger turn on power to the March Audio from MacBook Pro?
https://www.amazon.com/JSAUX-Headphone-Stereo-Compatible-Samsung/dp/B0BD57K7JG
In fact, the lower Ohm goes down the harder to drive(drains much current).Outstanding. I especially appreciate the discussion of March’s implementation and how that could affect the overall performance.
Can you do an 8 ohm power sweep, please?
How long do you want?> Near 1 kW of full power can be easily achieved
How long was it able to sustain this?
You buy this amp for it ultra low distortion. If you need its peak power, then you need that clean as well. And again the point was comparison agaisnt my measurements which stop before clipping.But if the manufacturer specify the max power as 1% THD and he clearly states it, he is not exagerating power level for marketing, he is just using a different treshold that your's and there is unfortunately no firm standard but it is a common number.
Now, You are right that the amp is out of it's linear behaviour at this level, but realistically, with actual audio content, in real use even if "no one would be happy listening at that level", good news is no one ever will listen at this level continuously, it's just impossible in real life with anything else than tones, so why does it matter if it can only do it momentary, that it's because of power supply reservoir caps, the reservoir caps are part of the amp, they serve this purpose. If someone only reach 1% THD on the very loudest peaks, well the amp is specced to be able to be able to do that and the user can be totally happy letting it happen and may not hear any distortion at all.
There is more chance of speaker destruction when an amp distorts. Regardless, this is not a 1 kw amplifier with that kind of measured performance.Lasting 1 kW is destructive for most of residential speakers.
As you already know, 1% is one of the industrial standard. so most of Amp commercials are at 1%.Small point for internal consistency .... Amir rates output as the point where distortion first rises, not at 1%.
He would possibly rate this at 80 watts at 8 ohms (he has not himself been 100% consistent with where he measures output limits, but this sharp an increase, he usually is).
That said, I disagree with his choice to do that, but I'm not the scientist.
I'm the heroin addict.
It was kind of a debate about power between that and 1200as2.There is more chance of speaker destruction when an amp distorts. Regardless, this is not a 1 kw amplifier with that kind of measured performance.
Definitely, Hi-Fi Class-D is the Future now here.Thank you for a most excellent review. I truly believe amps like this are the wave of the future.