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<blockquote data-quote="zako" data-source="post: 7963737" data-attributes="member: 629735">300w would have been plenty for my tastes, at least with an average to high efficiency 12inch subwoofer.However, the low watt THD (as in say 1/10ths of the max RMS output) does not seem to be very good. I wish the resolution of the posted THD vs watt graphs was more readable. Still, it seems like THD is at 0.1% or higher even at low watt output. I am normally used to seeing low watt THD to be below 0.05%. You can compare to the PPI P900.4 graph for example here (<a href="http://www.pasmag.com/images/stories/test_report_graphs/1304/precision_power/image1.jpg" target="_blank">http://www.pasmag.com/images/stories/test_report_graphs/1304/precision_power/image1.jpg</a>). Not that 0.1% THD is supposed to be audible, but this sheds some light on the quality of amplifier&#039;s implementation IMHO.If the OP still wants a recommendation, I&#039;d say look into an Alpine MRX-V60. It will give you similar power, but should be much cleaner overall. The V60 was discontinued recently in favor of V70 (which seems the same thing, maybe with 10% higher output), but a lot of vendors are still offering their old V60 stock for pretty low prices. If you want an amp with &amp;gt;400watt subwoofer channel, maybe consider a PPI P900.5 or SS TN5.950.</blockquote>

[QUOTE="zako, post: 7963737, member: 629735"] 300w would have been plenty for my tastes, at least with an average to high efficiency 12inch subwoofer. However, the low watt THD (as in say 1/10ths of the max RMS output) does not seem to be very good. I wish the resolution of the posted THD vs watt graphs was more readable. Still, it seems like THD is at 0.1% or higher even at low watt output. I am normally used to seeing low watt THD to be below 0.05%. You can compare to the PPI P900.4 graph for example here ([URL="http://www.pasmag.com/images/stories/test_report_graphs/1304/precision_power/image1.jpg"]http://www.pasmag.com/images/stories/test_report_graphs/1304/precision_power/image1.jpg[/URL]). Not that 0.1% THD is supposed to be audible, but this sheds some light on the quality of amplifier's implementation IMHO. If the OP still wants a recommendation, I'd say look into an Alpine MRX-V60. It will give you similar power, but should be much cleaner overall. The V60 was discontinued recently in favor of V70 (which seems the same thing, maybe with 10% higher output), but a lot of vendors are still offering their old V60 stock for pretty low prices. If you want an amp with >400watt subwoofer channel, maybe consider a PPI P900.5 or SS TN5.950. [/QUOTE]

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