Class D Technology

Let me add that while I do concede that my engineering knowledge falls short of what many of you possess, there's still a lot of bat guano peddled on these forums.   I like it here, and there are some very smart, very cool, very interesting people that I've learned a lot from, but oftentimes this forum is to audio knowledge what Fox News is to global news coverage.  Sometimes after I visit I have to remind myself that I didn't just spend 10 minutes on Shutter Island.

I have two integrateds, an Audio Research VSi55 running KT120s and a Peachtree Grand X-1 (Class D).  Through both pairs of speakers I own, Wilson Benesch Arc and BMC PureVox (both retail for $6500, whether these qualify as low-fi, mid-fi or otherwise is a matter of perspective and budget), I'd choose the Peachtree every day.     It sounds every bit as nice as the Audio Research, but runs cool, keeps the electric bill low, and takes up very little space while putting out huge power.  I guess admittedly there are a few cold days each winter where it's nice to use the Audio Research to both play music and heat the room, but otherwise it collects dust.   So I guess in my case, the future arrived 3 years ago when I bought the Peachtree. 

All that stuff about switching frequencies and flux capacitors and quantum math, I don't know anything about that.   I just press the power button, hit play, and sweet music comes out.  For all I know there's a team of hamsters inside the Peachtree playing little tiny violins.  I leave all that stuff to you engineers...if it sounds good, that's all I need to know. 

@sonicbeauty

I can understand this.  I once owned a Honda Accord that started making this sound that can only be described as sounding like the car was passing wind.   Every time you stepped on the accelerator, that first second of acceleration, it sounded and felt like the car had eaten too many burritos.  Sounds crazy, but it felt and sounded awful, like sitting on a whoopie cushion.  Took it back to two different dealers, both said it was normal.  Dumped that thing, bought a Camry, and have never visited a Honda dealer since.  Logically, I KNOW that Honda makes great cars, I like how they look, but I just can't go back...

If you are listening to Diana Krall, and you hear Katy Perry, the problem is much larger than amplifier technology.   You either have one heck of a malfunctioning system, a set of speakers that were dropped out of a truck before being delivered to you, or you are experiencing neurological problems that require immediate medical attention.  I'm not being facetious...Katy Perry and Diana Krall sound nothing alike, aside from both being female.  If that's genuinely what your ears heard, you have bigger issues than deciding what amp to buy.

You said it booboobaer.   I haven't read the entire thread, but have followed its progress, and I know there are lots of smart people here talking about Class D switching noise, and zombies coming out of the power supply, and modules and cats and dogs living together, and basically the the worst parts of the Bible.  I don't know about any of that...and I concede that due to my lack of technical knowledge, it's possible that my Peachtree integrated is secretly plotting the overthrow of mankind right under my nose and I don't even know it.  All I can tell you is that there's beautiful music coming out of my speakers, and that my Audio Research integrated with new set of KT120 tubes has become a very nice rack ornament.