You could also bridge the D-4.800 to drive a couple subwoofers with 400 watts RMS each. Smart-User DSP tuning software on a laptop (DM-810 version shown). D Series 800 Watt RMS 4-channel Car Amplifier with Digital Signal Processing.
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For power, this five-channel amplifier puts out 100 watts RMS to four channels and up to 500 watts RMS to a sub. The D-5.1300 sums them into one smooth, unified signal for you to balance, align, and tune for your high-performance speakers.
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The Shure UA834WB In-line Antenna Amplifier is a versatile and compact device designed for live performances. With a maximum SPL of 470-900, this amplifier is suitable for amplifying audio signals from microphones or other audio sources.
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eBay
Condition: New,open box.
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eBay