Discussion of Class D Amps Application & Experiences


With all the time off that our current situation has allowed recently, I became intrigued by the idea of class D amplification. I have always been against this type of amplifier but the more I have read the more I have also learned. There are lots of threads here on this subject many of which result in arguments about which amplifier class is better. I do not want to do that here. As I consider a class D amp I need to let you know that I currently use a fairly powerful class A/B SS amp and pre-amp into an efficient pair of speakers rated at 4 ohms. My choice of equipment has always been focused on musicality over absolute detail. I want the music to sound natural and not sterile. I seem to have achieved that sound. If I switched to class D amplification that would also be my intended goal although a bit more refined detail would be fine. I have considered pairing the amp with a tube pre to help achieve my desired sound. So why would I change? My goal would be to save money over my current gear while maintaining my desired sound.

I have researched brands such as Nord, Primare, AGD & Nuprime. I have also looked at brands such as Jeff Rowland & Merrill but those are way out of my price range. My target would be $6000 - $7000 or less. I'm about performance not price. So given that background information I would like to hear from those who have made the leap, what your experience has been (likes and dislikes), what amp did you replace and any comments about one brand over the other. Your experience with demos etc. Do you use a tube or SS line stage?
Thanks
falconquest
Because of their high frq noise, Class D amps can be a problem for tweeters with wide band frequency response and high frequency break up. Excess energy (not music related) can cause the breakup to induce distortion.
Another Class D that looks like it could drive most any speaker but I know nothing about is the Anthem M1.  They look interesting.  Pair of monoblocks are $7000. 

“Speaking of PS Audio, anyone have any comments on the M700's?”

I gave them a try but they didn’t do it for me. Not bad, but not what I was looking for. The price was certainly right.

One more thing about the Rowland 535s: don’t use any kind of power conditioner, filter, or regenerator. It really messes with them. Makes them hard and shrill. The rest of the system yes, but not the Rowland’s.
@markmuse Can you expand upon your comments about the M700's? In what way did they not work for you?
...I'm just happy to read a Positive forum on class D units....*S*

Maybe the detractors realize that they'd be overwhelmed here....

Good.

Carry on, J