NAD offers something close to that in their "Direct Digital Amplifiers". They have several models using this approach - C-390DD, D-7050, and their top model M2. They accept direct digital PCM inputs, and convert the digital signal into PWM which is then filtered to provide the analog output. There is no conventional D to A chip used in the conversion to analog. Details of the process are explained here - http://nadelectronics.com/download.php?131127134051-13-081_NAD_M2_Data_Sheet_F.pdf|Data%20Sheet%20-%20M2%20Direct%20Digital%20Amplifier
Digital-input amplifiers
Anyone know any class D amplifier that takes PCM directly? skipping the need for a DAC. I could only find them for cell phones...
Eg: http://www.maximintegrated.com/en/app-notes/index.mvp/id/5461
Although it does explain why some cell phone sounds like million dollar audio systems...
Eg: http://www.maximintegrated.com/en/app-notes/index.mvp/id/5461
Although it does explain why some cell phone sounds like million dollar audio systems...
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