Originally Posted by Scott Wilkinson
Analog maven and long-time class-D detractor Michael Fremer was finally won over by the Class D3 amp used in the Pioneer Elite SC-57 a few years ago, but some audiophiles still scoff at this technology, preferring the sound of purely analog designs. What's your take? Have class-D amps finally achieved a performance level commensurate with class-AB and the like?
You are making La Fawnduh blush. She's been pushing my 5 channel Klipsch Reference surround system since 2012. I've taken the time to compare La Fawnduh (my SC-57) to my Lab Grupen FP10000Q clone amp using a very cleaver speaker switcher, constructed by AVS member
, which allowed me to switch from AVR to amp instantly.
Setting La Fawnduh in 2 channel stereo, here is a direct comparison between the claimed 140 watts per channel AVR and the claimed 2,100 watts per channel amplifier:
Note that I'm hitting 115db @ 30Hz at my MLP ~12ft away. The tiny differences in the graphs can be attributed to me shifting my body in between taking the measurements.
Bottomline: Even pushing my speakers hard, I was unable to distinguish an audible difference between my AVR or a very powerful amplifier. This was consistent not only while running sweeps, but also demoing music & movie content for several hours and randomly switching back and forth in realtime.
Originally Posted by N8DOGG
Agree 100%. It's pretty funny, you rarely see any older guys embrace any kind of change, they will hang on to their 90lb amps and call them the best forever. I have to laugh when I people claiming how A/B is so superior, like technology hasn't evolved enough in the last 20 years to make an amp sound good..... and even at that, if guys are hearing vast differences between classes, their amps are broken.
Agreed. Broken and/or designed to add distortion (color) to the source material. I found this great presentation by our very own
that gives a bit more in depth context to the concept of "transparent power" and how your signal chain should remain as "transparent" and true to source as possible. Fast forward to 21:34 in reference to my specific point, but I've found the video very informative (even somewhat entertaining) and would encourage anyone to check out the entire video: