The Rockford Fosgate T400X2ad is one of Rockford’s most popular compact Power Series amplifiers because it delivers full-size amplifier performance in an extremely small chassis. Built using Rockford Fosgate’s proprietary Class-AD and Constant Power technology, the amp produces the same rated output at both 4Ω and 2Ω loads while maintaining excellent efficiency and low heat output. This amplifier is especially popular in Harley-Davidson, Jeep, powersports, motorcycle, and tight-space custom installs where mounting room is limited but high clean output is required. Despite its compact footprint, it delivers 200W RMS per channel and includes dual fan cooling, C.L.E.A.N. clip detection, and flexible crossover controls. Key Features: 2-channel ultra-compact Class-AD amplifier Constant Power technology 200W RMS x2 @ 4Ω 200W RMS x2 @ 2Ω 400W RMS x1 bridged @ 4Ω Differential high/low-level inputs Auto turn-on with speaker-level inputs C.L.E.A.N. input/output clip detection LEDs Variable high-pass & low-pass crossovers Punch EQ bass & treble adjustment Dual fan forced induction cooling 4Ω bridged stable PLC2 remote level control compatible Compact cast-aluminum heatsink Performance Specifications: Frequency response: 20Hz – 20kHz ±1dB Efficiency: ~75% Signal-to-noise ratio: >90 dB Operating voltage: 9–16V DC Recommended fuse: 60A Input sensitivity: 150mV – 12V Dimensions: 1.6" × 4.3" × 7" Weight: approximately 2.9 lbs
