2-Channel Bridgeable Amplifier. Pioneer amplifiers automatically select the proper input signal mode, either RCA or speaker level. When the receiver is turned on, the amplifier automatically turns on.
I have this running 2x boxed 4way pioneer speakers in the back of my Pajero.
I also have the 4way version running the 4x 4way sonys in my doors and a powered underseat pioneer 8” sub and all combined, it’s a beautiful system for under $1000!