Hi Vinod_david !
i exactly understand what you are trying to convey, i had been a GRADO sr80i listener for quite sometime and i know why any equipment is expensive. its not because that it can play louder that a musical system is judged, but by how clear n soothing it can be at lower volumes is what determines the quality of circuitry.
But my problem is i find the 50% or 12 O'clock position to be the best to my taste, am not saying that it should play at 70 or 80% volume, but whenever i like some music n i start enjoying it, i raise the volume to 50% position and as soon as some heavy beats come the system is bound to go into standby mode. i mean that i cannot play it continuously at 50% without going into safe mode. i do understand that at volume above 50% the system sound cacophonic, but heyy i am not going above 50%.
i expect the system should clip the excess signal and reduce the volume, as stated, but not go to the safe mode.
have you auditioned/compared NAD amps to cambridge amps??
what is your opinion and differentiation between the two?
do NAD amps also have this kind of protection circuitry that prevents user to increase volume?
Moreover they have removed incognito multi room circuit from 650A, as said in their video site, by which they say that it is having more of real-world performance.
i definitely like the sound of cambridge but heyy, every amp should get loud sometimes as and when user feels !!