Rockford Fosgate TM400X4ad Power 400-Watt 4-Channel Marine Amplifier

The Rockford Fosgate TM400X4ad is a compact four-channel marine amplifier with Constant Power output at both 4-ohm and 2-ohm speaker loads. It can power four speakers or operate as a bridged two-channel amplifier.

• RMS output at 4 ohms: 100 watts × 4
• RMS output at 2 ohms: 100 watts × 4
• Class-ad amplifier design
• Bridged RMS output: 200 watts × 2 at 4 ohms
• Selectable full-range, 50–250 Hz high-pass and 50–250 Hz low-pass filtering
• C.L.E.A.N. input/output clipping indicators for gain setup
• Punch EQ adjustment
• Marine-grade epoxy-coated circuit board
• Dual-fan cooling with real-time thermal sensing
• High-level inputs with auto turn-on
• Top-mounted gain and crossover controls