Class D Technology


So I get the obvious strengths of Class D. Efficiency, power output & running cool which allows for small form factors. I also understand the weaknesses somewhat. 1. Non-linear & lots of distortion that needs to be cleaned up with an output filter. 
So my question is, if it weren't for efficiency & power, would there be any reason to own a Class D amp? Do they beat Class A in any other categories that count for sound quality?  
seanheis1

Showing 2 responses by geekboy

Folks - really enjoyed reading this long thread. Very much appreciate the education and the discussion!

Just bought a pair of Bel Canto Ref600m on the Gon and found this thread after doing so.

I opted to go this route while trying to upgrade my amplification - which is currently a Supernait 2 driving PMC Twenty 26s. While the sound can be quite nice at times I’m thinking I’m underpowered - the Snait 2 is only 80 watts and the speakers are not an easy load - sensitivity of 86 reported (though probably lower based on some of my reading) and can go down to under 4 ohms. I’m hoping for a more dynamic range for orchestral music which sounds a little congested/strained currently. Plus I’d just like to hear the Bel Cantos.

I landed here after finding other options (with an eye to Class A) for getting more power to be a challenge - and thus not able to pull the trigger on something. I looked quite seriously at a demo Pass labs 250 INT - but while I am sure they are really great - are HUGE and serious $$$. I’d also have to get a new rack to hold them - even more $$$ and space.

Basically, Class D appealed due to cost and size. Reviews have been solid. The pair was under 4k less than a year old. And if I don’t like them they can go back to the Gon and I will be out a small amount of $$$ to test them in house! Pretty good deal (says the recent purchaser!) The new Bel Cantos is the new chip or whatever - different technology used than all their other units - so I am hoping for good things. this is going to cost me as I skipped the monos from Wyred for Sound cyber monday special - could of had those 1000sx pair for around $2200 - hope I made the right call!

anyhow - Really glad to have found this thread!

I’ll be sure to post how they sound!

Such an interesting discussion!

I'm perhaps a month into my Class D audition and I am very pleased.  I agree with other posters that the goal is good sound and comparing my new Bel Canto ref600ms to my Supernait 2....well, it's not even close - the Bel Cantos are better in so many ways - dynamics, speed (yes, even against the PRaT Naim) and in particular imaging.  The bass is excellent with so much more control and I find the mid/hi excellent as well.  No ear ringing here!  

I'm still comparing and learning - but I suspect soon my Supernait 2 will bo going to the 'Gon.  

Since I am having fun exploring I may try to pick up a Class A or A/B to power mid/highs and keep the D's for the bass to bi-amp. 

All in all, have to agree with mapman.  I could live with this setup indefinitely - incredible sound more than anything.  The benefits of small size and efficiency are just frosting on the cake.  I'm tempted to find a Bel Canto 3.7 or similar preamp/dac to simplify my rig and save some $$$.  As always, it will depend on the sound!

P