Class D is just Dandy!

If this "effect" has been remedied, or if I was just imagining it all, maybe a summer amp?

Design plays a huge role! Some amps are not very involving and some are.

Some class D amps employ Delta-Sigma processing, some are simple Delta, some are self-oscillating (the latter require loop feedback to operate correctly, the former two can operate with zero feedback with careful design).

Scan frequencies can cover a wide range. Some have dynamically variable scan frequencies. Some amps employ op-amp input circuitry for the audio, others are discreet and its even possible to have passive input circuits.

So with all these variants you just have to try one out and see if it works for you.

Hi Everyone,

Just FYI, Mytek has just posted info on their Class D amp to their web site.

The Mytek Amp fits perfectly under a Brooklyn DAC for a little under $2k. Order with the Brooklyn DAC and you get a $500 package discount ($3500 or so) which is a really good deal.

More here:

https://mytekdigital.com/hifi/products/brooklyn_amp/

For the power rating (250W/Ch) this is one of the smallest Class D amps I’ve ever seen.

I can’t wait to look inside it! :)

Erik

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.