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
Hello mitch2,

     You've utilized quite a few good and varied amps with your Aerial speakers. I've had much more limited amp experience, only using high current class AB amps (Adcom,McCormack and Aragon) initially and then several  different high-powered class D amps subsequently with  Magnepan speakers, my favorite being my current pair of D-Sonic monoblocks. 
     It seems like class D amps have been a better match with my speakers than they've been with yours.  I was actually considering buying a pair of Acoustic Imagery Atsah monoblocks before I decided to go with the DSonic M3-600-M monoblocks because they were almost $7K less expensive and had gotten good reviews here from some members. 
     They've performed great for me,outperforming my former class AB stereo amps in virtually all the sound qualities I consider important. But I'd still love to try out a good quality class A amp with my speakers since I've never used one and mainly out of curiosity about performance differences I'd perceive. OTOH, I'm currently completely satisfied with the D-Sonic class D monos and have no desire to actually switch amps; they're 1,200 w at 4 ohms, have a very low noise floor, are highly detailed, very dynamic, always smooth, natural and never harsh in the treble plus I'm able to leave them on 24/7. 

Hello kijanki,

     Yes, I've read several very positive reviews on the Benchmark AHB2 class AB amp.  One review that I found very interesting was a review of the AHB2 combined with the Benchmark LA4 preamp.I remember the review because it combined something I've always wanted to try out in my system, a very neutral, detailed, low distortion and low noise amp with a preamp having the exact same qualities. 
     I was seriously considering buying the LA4 preamp to try out with my very neutral, detailed, low distortion and low noise class D amps about a year ago.  But I was offered a Mark Levinson S326 preamp, that's also very neutral, detailed, low distortion and low noise, at a very good price and I bought that instead.  So, I was still able to try out the neutral, detailed, low distortion and low noise amps and preamp combo concept. 
     It's provided very good results in my system, using mainly hi-res sources through a Lumin D2 dac/streamer.  The overall sound is very neutral and detailed but it also really lets the qualities of the recording and music become the focus with a highly realistic and 3 dimensional sound stage that has the musicians seemingly playing in the room.  It's very palpable, detailed and enjoyable, especially on good recordings.

Tim   
         
     
Thanks Tim for the positive comments on D-Sonic.  I am soon going to need to replace an aging 1984 era NAD 2140 that powers my outdoor system and I have been keeping an eye on D-Sonic for that purpose.
Hadn’t thought of DSonic in a while but looks like they are still offering a lot of bang for the buck.

Nice website.....lots of useful specs and measurements.

What Class D modules do they use these days?
Ric Schultz TweakAudio's newest class D sounds fab. I have his EVS 1200 which is amazing,

Keep in mind Underwood HiFi is getting very close to releasing the Voyager GaN amp


https://www.underwoodhifi.com/products/lsa-electronics

Voyager GAN 200 Balanced Power Amplifier
$3,000.00

Our new LSA 200 watts/ch power amplifier, Voyager GAN 200, will ship by the end of 2020. This fully balanced amplifier is a breakthrough product featuring a GAN (Gallium Nitride) FET Output Power Stage as found in products selling for many times our $3,000.00 price.