Class A amplification
Posted by: TomK on 11 October 2003
Any audio techies got a few minutes to explain the difference between Class A and the rest? My upstairs system (Nad 541i/Stax 313 earspeakers) sounds better through phones than my main system (3.5/Flatcap2/new 250/Stax Lambda Pros). Ok there are a few variables but after a bit of swapping about it seems that it's due to the Stax 313 which just has such a grip on the music it's unbelievable.
Tom,
As you can see from This thread, I am no expert, but there are others out there who can help, I'm sure.
I'm hoping that somebody out there will explain this in detail (to me too) as I thought that I knew this ... but perhaps time and memory is letting me down here.
FWIW, as far as I remember from my training days, Class A means that the output device is biased to ensure that the entire amplified signal is centred in the linear portion of the amplification curve (Ia/Vg curve in a valve circuit) to prevent clipping (i.e. distortion) at the top and bottom of the signal.
Not sure what your problem is though, sounds like your number one sistem is off whack.
Mike
As you can see from This thread, I am no expert, but there are others out there who can help, I'm sure.
I'm hoping that somebody out there will explain this in detail (to me too) as I thought that I knew this ... but perhaps time and memory is letting me down here.
FWIW, as far as I remember from my training days, Class A means that the output device is biased to ensure that the entire amplified signal is centred in the linear portion of the amplification curve (Ia/Vg curve in a valve circuit) to prevent clipping (i.e. distortion) at the top and bottom of the signal.
Not sure what your problem is though, sounds like your number one sistem is off whack.
Mike