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<blockquote data-quote="headless" data-source="post: 5040643" data-attributes="member: 566363">Which is approximately like saying a ferrari drives exactly the same speed as a corolla...as long as you are driving 50mph.&nbsp; Which is true, but rather misleading.&nbsp; While modern (and well built) class D amps likely will be indistinguishable in distortion to current class A/B amps across the hearable frequency range, that is because a ****ton of filtering and modulation circuits have been developed in recent years to make it a possibility.&nbsp; Take eclipse&#039;s XA line for an example of a class D that can actually perform across wide frequency ranges without distortion...or as was mentioned the PDX line of amps. However, if you pull out an older class D amp without those benefits, you aren&#039;t going to see the same output and are going to need to low pass the amp to get rid of high frequency noise in the signal.&nbsp; Not to mention the notorious tendency to introduce nasty distortion around crossover points.&nbsp; Sure, a well built, properly filtered class D will cut all this stuff out.&nbsp; But not all class D amps out there ARE well built nor do they all sound the same.I do agree that there are many better things to worry about than your amp topology in most cases.</blockquote>

[QUOTE="headless, post: 5040643, member: 566363"] Which is approximately like saying a ferrari drives exactly the same speed as a corolla...as long as you are driving 50mph. Which is true, but rather misleading. While modern (and well built) class D amps likely will be indistinguishable in distortion to current class A/B amps across the hearable frequency range, that is because a ****ton of filtering and modulation circuits have been developed in recent years to make it a possibility. Take eclipse's XA line for an example of a class D that can actually perform across wide frequency ranges without distortion...or as was mentioned the PDX line of amps. However, if you pull out an older class D amp without those benefits, you aren't going to see the same output and are going to need to low pass the amp to get rid of high frequency noise in the signal. Not to mention the notorious tendency to introduce nasty distortion around crossover points. Sure, a well built, properly filtered class D will cut all this stuff out. But not all class D amps out there ARE well built nor do they all sound the same. I do agree that there are many better things to worry about than your amp topology in most cases. [/QUOTE]

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