Class D is just Dandy!

Delta Sigma processing = digital. :)

Most Class D amps are not digital. Weird. :)

Best,


E

I’m bringing this over from another thread, but Primare seems to be using their own digital amp modules, and Hi Fi News test reports praises their performance, unaffected by load, and flat to 60 kHz is quite a feat!

I also noticed how well Hi Fi is keeping track of Class D. Their comments about the relative differences between Class D modules shows they are taking the genre quite seriously, unlike say Stereophile, which has never bothered.

http://www.primare.net/assets/_managed/products/files/I32HiFiNews611UK.pdf

Best,

E

Delta Sigma processing = digital. :)

Most Class D amps are not digital. Weird. :)

Delta Sigma is not digital. It is a process used for digital encoding and there is a nuance there; its safer to say that data in a memory system is 'digital' (1s and 0s). It is also a good process for encoding for class D operation and is attractive because it allows for direct playback of a class D amp from a digital source, although unless there is some upsampling the clock speeds of most digital sources are far too slow for good class D operation.

All, not most, class D amps are an analog process. The funny thing is, if you want, you can use digital chips (for the most part, inverters) in the class D process. But it is very much an analog process.

Atmasphere,

If you use a delta-sigma encoding process, you are converting analog to digital, no? This AD conversion makes the amps "digital" a step most Class D amps do not need.

Otherwise, please show an example of a Class D amp which uses Delta-Sigma conversion which is not "digital"

it allows for direct playback of a class D amp from a digital source,

There's your hint Eric from Ralph , think about it.

Cheers George