Time to buy a class D amp?

snapsc:
"My advice...since amps DO sound different....and since class d amps are generally lighter in weight and less expensive to return....try 2 or 3 of them at the same time and send those back that don't give you the sound you are looking for....$50+- if return freight is nothing compared to getting to hear them in your home, on your system with your music."


     I think this is a good idea once you narrow your list down to amps you'd like to audition.  Most class D amps are sold internet direct and offer free in-home trial periods for a certain number of weeks stipulating you can return it for a full refund with no questions asked, and sometimes with free return shipping.  But I agree with snapsc that even paying a reasonable charge is worth it to hear it in your system and room.
     You could even add a column for "Trial Period" that lists the offered in-home trial period in days or weeks.  The only downside is that, in my experience, class D amps take a while to properly 'break-in' and perform optimally which could be longer than the trial period.  However, the three class D amps I own sounded very good right out of the box but still kept improving in sound quality over a number of weeks after until the sound quality stabilized at each amp's optimum quality level.  The danger being that the ultimately best sounding amp just happens to have the longest 'break-in' time and the in-home trial period was too short for you to discover this.
    All of my class D amps have been on 24/7 for over 5 years now and are still operating flawlessly (knock on my head).  I suspect their low internal operating temps likely only increases their lifespans but this currently lacks scientific, objective and independent validation.  If longevity concerns you, you could also add a column on your list for warranty length and terms.

Good luck,
    Tim

Thanks indeed, Tim and @snapsc for your comments! 

I did not know, Tim, that all these brands produce Class D amps.
It would be virtually impossible to verify all of them (but will make a search for some of them) and given that i live in Mexico, buying and returning would not be really feasible. 

Although I am not yet completely convinced that it is already time to buy (another)  class D amp, i am still desperate to try one more because i like class D concept. I listen to 2-channel systems (no home theater!)  and could take an option of a stereo amp or monoblocks. Naturally, i would only consider a candidate with a high coefficient *performance/price* according to my vision of class D concept. 

@snapsc, your impressions on 2-Cherry after trying two other (known for me) class D amps are important for me. I was also inclined to a Cherry amp. The biggest and supposedly best one is Megaschino  (should be very good at $6900 in class D), then comes Gold Cherry with the same price i think and Cherry 2 with a much more accessible price. My question is, which of these three models maximize ratio  *performance/price* ?
Did someone compare these three? 

Hey niodari,

     If you're looking for the highest performance/price class D amp and don'[t mind buying used, I think the Merrill Audio Veritas monoblocks are a great option to consider.  Reviews on these amps claim they're among the best performing amps available regardless of amp type or price. They sold new a few years ago for $12,000/pair but I've recently seen numerous ads from owners with an average asking price of about $5,000/pair.
     Merrill audio recently came out with a new lineup of Element amps utilizing extremely fast switching GaN transistors that virtually eliminate 'dead-time' which significantly reduces distortion and improves sound quality. These include the Element 114 which is a stereo amp priced at $15,000 and 2 monoblocks,  the Element 116 and Element 118 priced at $23,000 and $36,000/pair respectively. 
      I'm thinking  the reason numerous ads are appearing for used pairs of Veritas amps is due to current owners of Veritas monoblocks planning on buying one of the Element amps and are selling their Veritas monoblocks in preparation. I strongly believe you'll prefer the sound quality performance of the Veritas amps over the Cherry amps but I can't know this with certainty.  Here's one of many good reviews on th Veritas:

https://positive-feedback.com/reviews/hardware-reviews/merrill-audio-veritas-monoblock-amplifiers-are-all-class-d-amplifiers-the-same/


Tim

Hey Tim. An important attractive side of class D amps is their low price 
and high ratio performance/price. I am not sure if for Merrill class D amps this is also true. Neither you nor me have auditioned it, given their price, they should sound almost magical to have a high ratio. Buying   Merrill amp would be similar to buying a very expensive electric car. I have a hybrid one which did not cost much more than similar non-hybrid onces, this made a sense. Demo Cherry amplifiers are on sale, some of them cost nearly the half of their normal price. If their sound quality is somewhat close to  Merrill class D amps (at least, not too far), ratio performance(Cherry)/price(Cherry) >> performance( Merrill)/price( Merrill)
even considering used price. And, perhaps,  older Veritas series amps are not magic sounding (if not, why they have changed the profile of their class D amps?). I am curious to compare SQ of Cherry,  ATI, Veritas and Element amps

I have been very happy with a Wyre4sound St 750le. You can check it out on 10 Audio's review site. He favorably compares it to a single ended tube amp sound and gives it a 9.5  rating.