Skar Audio SKv2-100.4AB Full-Range Class A/B MOSFET 4-Channel Car Speaker Amplifier, 800W Max Power

Amazon.com Price: $259.99 (as of 01/20/2021 08:50 PST- Details)

Competition Grade Class A/B 4-Channel MOSFET Car Power Amplifier
Peak Power at 2 Ohms: 210 Watts x 4 Channels (14.4v)
RMS Power at 2 Ohms: 150 Watts x 4 Channels (14.4v)