Class A or Class D solid-state amplifiers (modern designs)


Hey guys.

 

Class A is supposedly superior. Something to do with a conduction angle of 360 degrees...so the entire signal gets processed in one go without crossover distortion.

But in terms of sound quality (subjective enjoyment) is there a benefit to Class A? Can class D provide the same level of enjoyment?

 

The dealer I’m talking to says that really nice Class A amplifiers are designed for "reference quality" meaning completely true to the real life performance.

 

Let’s compare and contrast. Which one is technically better?

 

In other words, could you have equal technical performance and quality in a Class D amp?

 

- Jack.

jackhifiguy

Showing 1 response by patrickdowns

I haven’t heard these, and the size and price kinda makes me wonder, but AbSound gives them a product of the year award. The size is amazing. I am tempted to try a pair.

Orchard Audio Starkrimson Monoblock Power Amplifier

$1500/pr.

While virtually all Class D amplifiers use off-the-shelf output modules, the diminutive Starkrimson is built from a proprietary circuit topology of Orchard Audio’s own design. The Starkrimson features gallium nitride (GaN) transistors rather than silicon devices, which allow the switching stage to operate at a super-fast 800kHz, almost three times faster than conventional switching stages. This leads to fewer switching artifacts, lower THD, and higher SNR. With 150W into 8 ohms on tap, the Starkrimson yielded a remarkably transparent soundstage and a spacious presentation. The musical tapestry was vibrant with transients unleashed to their full dynamic potential. What also endeared it to reviewer Dick Olsher was its ability to scale dynamic peaks without changing its tonal character. This was coupled with stunning resolution of complex passages, which left DO thinking that this should not be happening with a $1500-per-stereo-pair amplifier. The Starkrimson sounds like a high-definition Class A amplifier, and surely offers a glimpse into the future of Class D amplification. An absolute must-audition, and our Budget Product of the Year.

Absolute Sound POY