guidocorona

Responses from guidocorona

Class D Technology
Hi seanheis1, as far as I know, preamplifiers cannot be implemented in class D... I have been told that their topology is the equivalent of class A. However, Preamps with regulated SMPS do exist... ANd the ones I have listened to are rather wonder... 
Class D Technology
Thank you Tim and nyame.... I try to report what class D amps I have experienced in the last decade in as unadorned a way as I can.One more class D amp worth looking at below $10K is the Theta Prometheus... I believe it is an NCore NC500 implement... 
Class D Technology
The concerns of the OP and of George are correct, at least from a historical point of view.... When I first started looking at class D amps, in the middle of the last decade, there were many examples of class D amps which were either sounding dark... 
Class D Technology
Hi Mapman, when I had BC REF1000, I had best results in ascending order with Furutech Evo II, Shunyata CX series, and Shunyata Z-tron... By Extrapolation, I conjecture that the Shunyata Alpha and Sigma series might yield even more desirable result... 
Class D Technology
Congratulations geekboy!Be patient with your new BC Ref600S before evaluating them seriously.... Unless they were completely broken in before you got them, it will take anywhere from a few hundred hours to about 1000 hours for them to reach their ... 
Class D Technology
You are right Mapman, if I ever change amps, the replacement of my monos is going to be an integrated+DAC.... Probably the Rowland Daemon, which is also running in class D.  
Class D Technology
Mapman & Al... I'm afraid the your effort to open some solidly shut minds -- if just a smidjin -- might be on the neutral side of... Futile. To quote our unforgettable Rodman9999: "Just don't fall into the category of those whose minds, like ... 
Can you leave class D amps on and not ever turn them off?
Hi Ph.D.... YOu are absolutely correct.... I have observed the same thing, and should have mentioned it.Fact is that with all my amps, class D and class A/b alike, I turn them off once a week for a couple hours for the very reason..... After a wee... 
Can you leave class D amps on and not ever turn them off?
I have had the following class D amps in my system over the years: Bel Canto REF500 and REF1000 Mk.2. Rowland M312 and M925. In all cases, I have left them on 24/7 while monitoring the local wheather like a hawk. Whenever thunderstorms are in the ... 
Class D Technology
Adding some more info about the Bel Canto REF1000 Mk.2. John Stronczer of Bel Canto added a custom input stage which elevated the input impedance from 8K Ohms to 100K Ohms, to make the amp compatible with those tubed pres that exhibit high output ... 
Class D Technology
seanheis1, while most newer class D amps are incredibly quiet, -- as in having no background noise -- foreshortened decay or "ead and opaque leadden silence around the note is not the sign of any good amp, unless a track was created synthetically ... 
Class D Technology
Fascinating... Looks like my last post has dematerialized. I was not aware that what I write is so controversial. Oh well...To Charles, Mola Mola is a very fine amp, but it might not constitute the "last word" in the application of NCore technolog... 
Class D Technology
Hi Charles, I agree with you, in the following way:From a sonic point of view, there is really no absolute advantage in principle between one topology and another one.Rather, there are users that might find a particular amplifier of one topology p... 
Class D Technology
Thank you grannyring, yours is an excellent case in point... You and I happened to have adopted class D amps because -- using our own ears *Grins!* -- we fell in love with their sound... And are still in love with what our devices continue to do f... 
Class D Technology
Hi seanheis1, amplifier designers modifying class D modules is largely an urban legend.... One of the few amp designers who has done this is Bruno Putzeys, who has made some minor modifications to his own Hypex NCore NC1200 for integration into th...