I got this power supply for two reasons, first to have an easy way for testing car/marine audio equipment and also to run a sub/amp combo in the garage with my existing stereo out there because its hard to get car audio "bass" out of home audio powered subwoofers (unless you use Polk Audio home subs). The amp running off of this Pyramid PS26KX is and old Punch 40 which putts out somewhere around 180 to 200 watts and is pushing a single voice coil 4 ohm 12" sub in a sealed enclosure. I have the power supply set at about 14.5 volts and it allows the old Punch 40 to "be all it can be" with the gain set at about 3/4, never drawing above 10 amps from this power supply at full volume, which tells me this power supply could probably power at least a 500 watt amp with ease. The power supply has not gotten hot or given me any problems so far, it does make a high pitch noise for a couple seconds when I turn it off, but I believe it is supposed to do so as the protection light comes on when it makes this noise as it is powering down to shut off. Oh yeah, this thing is very heavy which is probably a good thing meaning that it is well built.
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