Why it's a best pick:
The Sony Xplod XM-4S belongs to Sony's 'Slim Series' of amplifiers, which explains its size and design. This compact amplifier is easily mountable anywhere, including under the seat for maximum space efficiency. Its small size does not mean small performance, however, with a maximum output of 500 watts. The XM-4S can send 50 watts to each of its four channels at 4 ohms, or 60 watts at 2 ohms. The XM-4S does not offer 2-channel output, instead opting for a three-channel mode which sends 50 watts through two channels at 4 ohms and 120 watts at 4 ohms to a subwoofer. Aside from its small size and huge power output, the Sony Xplod XM-4S is one of the best value amplifiers that you can incorporate into your system today.
Average User Rating:

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6 total reviews)
Very small and decent full range amplifier October 04 2007This amplifier does very well fitting into tight spaces. I've never had any issues with it getting too hot. I did remove the shroud, it just looked too fla...read full review
Perfect Fit March 07 2009Bought this amplifier after a few months of research for a low profile amp. And it has not disappointed yet. Installed it in a '95 Corvette behind the dr...read full review
Awsome space-saving performer! February 07 2010Bought this to step up the sound in my Chevy Colorado, and Pontiac Solstice. I have put this amp in several other cars and it sounds great and turns up as ...read full review
Manufacturer Description: Sony designed the Slim Series XM-4S amplifier for small vehicle installations, with a low profile that allows it to fit under most front seats. On the outside, the sleek inverted heat sink keeps vital internal components running cooler and lasting longer. Removable terminal covers keep all the wire connections protected and out of sight for a clean-looking installation.Underneath the hood, the XM-4S amplifier delivers 50 watts RMS to four 4-ohm speakers ? plenty of power for even the most demanding speaker system. Or you can bridge your XM-4S into 3-channel mode, sending 50 watts RMS of power to two speakers while driving a subwoofer with 120 watts RMS from the rear channel.




(6 reviews)






