Yes, I will send in another P502 soon for re-test.
Can you send a NC250MP model ?
Thy is the "better one" MP module according to Hypex Datasheet... i hope to see the measurements Versus the other one....
Yes, I will send in another P502 soon for re-test.
It says into 4 Ohms, so I presume so. Best ask Amir.Was amp actually driving a resistor load with rated power during this test?
I will send a P252 (we dont make a NC250 based mono) but it will be after the Sydney Hifi show in a few weeks. . I need the demo units for that.Can you send a NC250MP model ?
Thy is the "better one" MP module according to Hypex Datasheet... i hope to see the measurements Versus the other one....
It says into 4 Ohms, so I presume so. Best ask Amir.
Ok, let's hear what he will say. What strikes me as odd is why using 5W resistor when you have (say) 150W or 250W resistor to measure load under full power.
5W is Amir's standard low power test. Typically it was 1W, but let's face it, speakers are pretty inefficient these days and most listening is done with levels hovering around 5W/4R, even I admit that is true.
His high power resistors can do upwards of half a kilowatt.
I guess you meant 252MP. You already have your answer here:Can you send a NC250MP model ?
Thy is the "better one" MP module according to Hypex Datasheet... i hope to see the measurements Versus the other one....
The price/performance doesn't seem to be that great, pretty low power so I'd rather spend a bit more to get at least double the power.
There are many reasons people choose a particular product. Price is rarely the defining reason.I guess you meant 252MP. You already have your answer here:
https://www.audiosciencereview.com/...d-measurements-of-iom-ncore-pro-pwr-amp.8979/
I tend to agree. (No offense, Alan). For EU customers, Audiophonics NC122MP or NC252MP amps are more competitive (if we don't consider build and finish).
He is not using a 5 watt resistor, he is testing at 5 watts output as this is a very typical listening level. His dummy loads can take over 500 watts as he has tested other amps at this level.Ok, let's hear what he will say. What strikes me as odd is why using 5W resistor when you have (say) 150W or 250W resistor to measure performance under load at full power.
Our P252 performs better.I guess you meant 252MP. You already have your answer here:
https://www.audiosciencereview.com/...d-measurements-of-iom-ncore-pro-pwr-amp.8979/
I ).
He is not using a 5 watt resistor, he is testing at 5 watts output as this is a very typical listening level. His dummy loads can take over 500 watts as he has tested other amps at this level.
True, if you have very sensitive speakers this is probably enough.There are many reasons people choose a product. Price is rsrely the defining reason.
(if we don't consider build and finish
True, if you have very sensitive speakers this is probably enough.
The [Paradigm] Atom boasts a sensitivity of 90dB with an impedance of eight ohms, meaning it is suitable for amplifiers and/or receivers ranging in power from around 15 watts on up. Its maximum sustained input power is said to be 50 watts.
Being familiar with Alan's Background (LINK), which includes working for many years at the turbine (jet engine) division of Rolls Royce, I would expect the cases, components and assembly of March amplifiers to be of very high quality.
Realistically, March Audio's specifications for the unit have been confirmed in independent tests. Personally I don't agree with a Pout/2 (half power) THD figure being headlined in the official rated specifications, but one could argue it's a more typical use-case than a full power test.
Amir's tests closely align with the Hypex data, although I just wish a "line-in-the-sand" %THD figure was used for ASR tests going forward. I use 0.1%, Hypex uses 1%, Amir uses the "knee" which could be essentially anything and varies from product to product. If one was to pick 1%, even "designer" tube gear would make it, without needing special concessions...
As a Hypex Class D implementation, nobody can deny the clean and simple look of the product without looking like a DIY project. It appeals to me, although I'd just buy a couple of his mono-blocks and call it done if I was starting out.
Different people's requirements do vary quite a lot. It does depend upon speakers, application; size of room, listening style etc. Even 75 watts (8 ohms rating) into typical 85dB/w/m speakers can generate decent sound levels, circa 103dBTrue, if you have very sensitive speakers this is probably enough.
I agree we need a consistent limit, whatever that may be, and not just eyeball the knee point.