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Message: <blockquote data-quote="n2audio" data-source="post: 1322707" data-attributes="member: 540940">We would need to know what type of amps are being compared.A class a/b doing - say - 1000w at 4 ohms will be quite a bit more electrically demanding than a class D doing 1000w at 1 ohm - especially at anything less than full output.  Class D efficiency stays fairly constant (~75%) at all output levels whereas class a/b's peak at around 60% at full output and drop to ~30% at low-moderate volumes.The THD debate is subjective.  There are those that swear by their a/b amps for subs and others that say THD in the sub frequency range is a non issue and the price/efficiency of a class D far outweigh any SQ disadvantages vs. a/b.</blockquote>

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