pma

https://electronics.stackexchange.com/questions/158602/what-is-power-supply-pumping and TI pdf...

P(A) = 2*R*Iq^2 R … load impedance Iq … idle current In your case, for 20mA and 4ohm, yes it is 3.2mW in class A. With measurements...

‘Good’ simply by being ubiquitous, like McDonalds? Keith

Magnat made and makes small and large speakers ranging from a bookshelf speaker to a floor stander speaker. They can hold their own...

Indeed! It would be lovely to see more Magnat speakers tested. I Bought recently a pair of second-hand Magnat Quantum 757...

Maybe the wide use of NS10 is the reason why almost all rock and pop mixes sound horrible. Compared to well recorded jazz or classical...

I do not have it at the moment. However, this is 102W/2ohm 19+20kHz distortion. Benchmark AHB is without any chance ;). THD and...

Measurements with 2ohm load - it is incredible how this amplifier handles heavy load! Please note that my power supply is only 2 x 46V!

Hypex SMPS1200A400 eats 9W at idle. @restorer-john is right that idle and stand-by is not the same.

Yes, just 3dB :cool:.

Doubling from 500 W to 1000 W is just as much increase as doubling from 1 W to 2 W.

Depends then on idle current of class AB, which can be easily between 10 - 200 mA, depending on design. If the idle current is low, then...

Class D amplifiers are efficient, same applies to SMPS power supplies. Below 2 real world measurements on my amplifiers, complete...

I like the cleanliness of 1ET400A spectrum when measured with wide bandwidth 90kHz. The spectrum is free from ultrasonic messy lines...

I agree, and with a good old electro-mechanical volume pot you definitely got that. But with a rotary encoder and a micro-controller...