Unsound is absolutely correct! TI based Equibit digital amplifiers are as quiet as it gets. No Hums ,no hiss..nothing ! They have a hard mute built in so they put out no wattage ..unless a digital bitstream is sensed. The PCM bitstream is changed to PWM form and then filtered and buffered.The signal is sythesized directly on to the speaker terminals which creates a high powered D/A converter.No traditional D/A converters are used in the audio signal path.
In laymans terms these amplifiers are just high powered Dacs that plug directly into your speakers.
This is also an open loop design no feed back.
At the present time there are only two audio manufactures that use this technology Tact all digital amplifiers($10,000 price range) and Panasonic all digital amplifiers ($300.00 price range).
Here's a link for the ones that want to understand this technology and not confuse it with amplifiers that are not 100% digitally based.
http://www.classd.org/
In laymans terms these amplifiers are just high powered Dacs that plug directly into your speakers.
This is also an open loop design no feed back.
At the present time there are only two audio manufactures that use this technology Tact all digital amplifiers($10,000 price range) and Panasonic all digital amplifiers ($300.00 price range).
Here's a link for the ones that want to understand this technology and not confuse it with amplifiers that are not 100% digitally based.
http://www.classd.org/