The Future of Audio Amplification


I have recently paired an Audio Research DS225 Class D amplifier with an Audio Research tube preamplifier (SP8 mkii). I cannot believe how wonderful and lifelike my music sounds. The DS225 replaced an Audio Research SD135 Class AB amplifier. Perhaps the SD135 is just not as good as some of the better quality amps that are out there, but it got me thinking that amazingly wonderful sonance can be achieved with a tubed pre and Class D amp. I have a hunch that as more people experience this combination, it will likely catch on and become the future path of many, if not most audiophile systems. It is interesting that Audio Research has been at the forefront of this development.
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Showing 2 responses by agear

As kosst alluded to, class D is not a new technology and was developed largely by Phillips for the sake of specific engineering requirements such as one would find in an hearing aid for example.  Class D has had a renaissance of late due in part to engineering or rather manufacturing convenience (who wouldn't want a kit you could pop in an aftermarket box).  

No one has provided a logical, technical counterpoint to kosst's argument regarding class D other than experiential vignettes.

I for one have owned the gamut of amplification (including several class D variants with multiple iterations of Hypex and a DIY amp from Class D Audio).  Class D was pleasant enough (with a tubed pre-amp), but failed to hold my attention and seemed vaguely flat and bleached for lack of a better description.  I have regressed back into the archaic world of tubes (Trafomatic 300B integrated) and the music is back.  To each his own.  With audiophiles, the rubber meets with the road with duration of ownership.      



Ralph, you are more capable than anyone on this thread to explain why class D is the future from a technical standpoint.  Lay it on us.  Also, have you (as George is implying) had a religious conversion to the world of class D to the point of implementing it in your products?