I would agree that the Sunfire can pretty much drive whatever you throw at it. Low impedance, high reactance speakers are a breeze with the amp never sounding compressed or smeary at any volume level. It just gets louder and louder as you increase the gain. While it may not have as much of a "slam factor" as some other amps, it is quite a deal for the money. This is ESPECIALLY true if buying used. Sean
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