Rockford Fosgate Power T400X4AD - 4 Channel Ultra-Compact Class AD Amplifier

The Power T400X4ad 400 Watt 4-channel ultra-compact, amplifier is built on Rockford Fosgate’s proprietary Class-AD technology, featuring Constant Power to produce the same output at both 4-Ohm and 2-Ohm impedances. Flexible vehicle integration enabled through low-level and high-level inputs with auto turn-on. Top mounted controls allow easy access to built-in crossover and C.L.E.A.N. input/output clip detection circuits. The 3-stage thermal lock extrusion with dual fan forced induction keeps everything cool while real-time thermal/protection schemes safeguard the amplifier.

• Rockford Fosgate proprietary Class-AD technology
• 4/2 Ohm muti-impedance Constant Power
• Differential inputs with high level auto turn-on feature
• 8 AWG power/ground connector w/ upgraded RCA connectors
• Remote-Out feature when using high level inputs
• 2/4 channel input switch
• 4 Ohm bridged capable
• C.L.E.A.N. input/output clip detection and indicator LEDs
• Top mounted controls
• Dual fan cooled
• Real time thermal sensing
• Dual extruded heat sinks
• Discrete surface mount technology
• 1 Years Standard Warranty
• Number of Channels: 4
• Rated Power(RMS Continuous Power):
• 100 Watts x 4 @ 4-Ohms
• 100 Watts x 4 @ 2-Ohms
• 200 Watts x 2 @ 4-Ohms Bridged
• Total Power (Sum of Rated Power): 400 Watts RMS
• Dynamic Power (PVC/PowerCube® Measurement)
• 128 Watts x 4 @ 4-Ohm
• 152 Watts x 4 @ 2-Ohm
• 290 Watts x 2 @ 4-Ohm Bridged
• Bridgeable: Yes:
• Front Terminals: Left (+) Right (-) 
• Rear Terminals: Left (+) Right (-)
• Crossover Controls:
• High-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth 
• Low-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth 
• All-Pass: Yes
• Tone Controls:
• Front Channels - Punch EQ
• Treble: 0dB to +12dB @ 12kHz
• Bass: 0dB to +18dB @ 45Hz
• Rear Channels - Punch EQ
• Treble: 0dB to +14dB @ 12.5kHz
• Bass: 0dB to +18dB @ 45Hz
• Signal Input:
• Front Low level: Front High/Low Level Input: 4-Pin harness
• Rear Low level: Rear High/Low Level Input: 4-Pin harness
• Signal Output: N/A
• Power Input Connector: Detachable Compression Terminal
• Power Wire Gauge: 8 AWG
• Speaker Output Connector:
• Front: 4-Pin Harness
• Rear: 4-Pin Harness
• Speaker Wire Gauge: 16 AWG
• Heat Sink Type: Extruded Aluminum
• Cooling: Dual Fan Cooled
• Remote Controls:
• Visual Indicators:
• Power: Blue LED 
• Protect: Red LED 
• Input Clip: Red LED 
• Output Clip Blue/Red LED
• Circuit Topology Class: Class A/B
• Frequency Response: 20Hz to 20kHz +/- 1dB
• Dimensions (HxWxL):
• 1.6 x 4.25 x 8.3 (in)
• 4.1 x 10.79 x 21.1 (cm)