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oldtimer said:But do they give you an output which is nice to listen to. All this recent bump bump stuff which I hear coming from inside cars is ideal for digital but it's no good for music. In Class C you're biasing beyond cut-off,more efficient yes but distorted.
Dr.EM said:Class - D amplification can be very high quality, this Hi-Fi manufacturer uses it in some of it's models:
**broken link removed**
The technonlogy has more use in portable equiptment really, but very compact amplifiers can be produced using it. Imagine how big that 1000W amp would be as analogue, and how much heat it would produce.
Death By Bass said:they are never really going to be high quality, and you would be rather stupid to even attempt to use a class D for full range, for subwoofer duties, they are ideal.
Dr.EM said:As for valves, i've never really heard them either, but isn't the deal with them that they have more distortion and noise technically, but usually sound more "musical"?
oldtimer said:I was brought up on valves so I'm a bit biased,if you'll excuse the pun, and my knowledge of class D is very limited so I'll bow out.
audioguru said:It is not a complete class-D amplifier. It is just a pulse amplifier.
It doesn't have an audio input stage.
It doesn't have an ultrasonic oscillator.
It doesn't have an audio to Pulse-Width-Modulation converter.
It doesn't have a lowpass filter to feed the speaker.
It doesn't have negative feedback.