The Truth about Modern Class D

My speaker system is DIY, assembled from various sources:

Bullet tweeters + 300 Hz conical-horns with field-coil modified B&C DCM50 compression drivers + (2) 15" Acoustic Elements DiPole 15" woofers in (2) U-frame cabinets per side.

Each driver is powered by a modified/upgraded NuForce Ref 9V3 amp.
The midrange horns are driven by Ref 9 monoblocks, the other drivers are powered by 6 channels of a 7-channel NuForce HT amp, with the same modules as the mono amps (also modified/upgraded).

If I switched to eight Class A or Class A/B amps - either tube or solid state - the listening room would be far too hot and my electric bills would go through the roof. Class D is the only practical way to go for me. I am not wealthy.

My stereo can go toe-to-toe with any system out there. 

Like any ultra-accurate system it is brutally revealing of bad source material.

But great recordings shine like the sun.

It’s simple. You cannot put anything into the air besides a hot air balloon. At best you can create a glider and glide down from above, but the idea that you could build a machine heavier than air that could hold a person a motor and fuel combined is ridiculous.

Just think of the weight of the fuel alone! Gasoline weighs over six pounds per gallon. To have enough gasoline to push against the ground with a motor or fan of some sort would require monstrous gasoline consumption.

It is utterly ridiculous to imagine that you could do anything useful with a machine and flight. The machine itself, the motor, the fuel and the pilot simply are not sustainable.

Not only is it physically impossible, but dear god, it’s a foolish venture to attempt to make such death traps into a business. You could never produce an actual plane that could carry itself for long, let alone cargo, people, or get anyone to pay to have the gargo moved that way. Anyone who shipped via an airplane would surely loose their valuable posessions that way.  And comfort? What kind of comfort could you experience from falling out of the sky?

No, sir, no. It is clear that rational human beings should stick to balloons.

"Truth" is a word like "Fact" ... it is only for science.
Taste is not science. That is a fact, for example.

Class D at it’s best is great for some and lacking for others, and that’s fine.
Stop justifying your purchase, it’s the essence of admitting you’re insecure about it. If you’re happy ... great !
LISTEN and ENJOY !! That’s the goal here, it’s not a contest or a science project ... to love music.

brianlucey

+1 well said.

Talking about "sonic signatures" of amplifiers it is worthwhile to mention  (and read about) Bob Carver and Bruno Putzeys.
The Carver Challenge | Stereophile.com
Bob Carver - Wikipedia
"Carver caused a stir in the industry in the mid-1980s when he challenged two high-end audio magazines to give him any audio amplifier at any price, and he’d duplicate its sound in one of his lower cost (and usually much more powerful) designs. Two magazines accepted the challenge."

Bruno Putzeys: Head of the Class (D, That is) | Sound & Vision

6moons audio reviews: Acoustic Imagery Atsah

"Here's a quote from Bruno Putzeys to get back on sonics: "It's always a dilemma whether an amp should be tuned for things like subjective bass control, sweet mids or not. One of the tricks a McIntosh does by design is to have a highish output impedance—because of the autoformer—which makes for a more liquid midrange sound and then to add a subjective sense of bass control by allowing a slight THD rise in the top end. When things like those are really tastefully balanced, such an amp can really make life hard on a 'straight wire' amp in a shootout. The signal actually comes out sounding nicer and more impressive than what went in. But on the other hand I think that to make the greatest number of people happy, one can't afford to give an amp a sound of its own because the number of new fans is probably immediately offset by the number of people who don't like that particular tuning. But it's tough to resist the occasional sonic touch-up. I can emulate the sound of pretty much any amp out there if I wanted. But so far I'm resisting. If ever I give in, it'll be obvious from the measurements and I hope someone calls me out on it. Anyhow that's why I decided I actually wanted the NC400 to have this unvarnished dead-pan delivery." His white paper explains the details on the Ncore technology."