The PA500 Amplifier will work with any stereo, or it can be used as a stand alone unit.
Features for the PA500 PA Amplifier
Power Output: 70 watts
Power: 12 Volt
Installation: in-line between existing stereo and speakers
Electronics enclosed in small module that hides in dashboard
Automatically interrupts audio from stereo and engages microphone amplifier when keyed
Dimensions: 1.16″W x 1.7″H x 3.35″D