Underneath the hood, the XM-4S amplifier delivers 50 watts RMS to four 4-ohm speakersplenty 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.

You can use the high-pass filter to tailor the signal going to your front speakers, or adjust rear-channel output with the low-pass filter and bass boost. Signal-sensing speaker-level inputs activate the amp automatically when it's connected to a factory radio, so there's no remote turn-on lead for you to install.

Key features

Small Foot Print Design
Channel Configuration: 4 Channel
Line - Low Level Input x 4
Speaker - Hi Level Input x 4
MOSFET Power Supply
Bass Boost Control: 40Hz, 0-10dB (Rear)
Toroidal Transformer
Gold Plated Terminals