Rockford Fosgate Power Series T400-4 4-Channel Amplifier

The Rockford Fosgate Power Series T400-4 4-Channel Amplifier is built for front/rear fading stereo systems or when you need dedicated amplification for front speakers and rear subs. Its Dynamic Thermal Management and compact chassis allow installation in tight spaces, such as under a front seat.

• 4-channel MOSFET output stage: Delivers clean, stable power to four channels with efficient switching for in-car listening reliability.
• 4Ω/2Ω power ratings: 60W x 4 @ 4Ω and 100W x 4 @ 2Ω provide solid, room-filling performance in everyday setups.
• Bridgeable design: Two channels can be bridged to drive a sub or subs with 200W x 2 @ 4Ω bridged for higher SPL in a compact install.
• Dynamic Power (PVC/PowerCube): 84W x 4 @ 4Ω; 139W x 4 @ 2Ω; 272W x 2 @ 4Ω bridged for headroom during musical peaks.
• Frequency response: 20 Hz to 20 kHz ±1 dB preserves full-range musical detail.
• Class A/B topology: Balances linearity and efficiency for faithful audio with reasonable heat in everyday use (69% @ 4Ω, 68% @ 2Ω).
• THD+N: <1.0% at both 4Ω and 2Ω keeps distortion low across listening levels.
• Crossovers and EQ: Front/Rear HP 50–500 Hz and LP 50–500 Hz, 24 dB/octave; Front/Rear Punch EQ with Bass/Treble boosts; optional Remote Punch EQ.
• Inputs and connections: 2/4 channel input switch; Front and Rear 1 RCA pair each; audiophile-grade speaker connections; 8 AWG–4 AWG power input; 8–18 AWG speaker outputs.
• Protection, compliance, and size: Power and Thermal Protect indicators; CTA-2006 compliant; 2.14" H × 8.14" W × 13.66" D (11.9 lb).
• Warranty: 2-Year Warranty.

In a typical car-on-a-budget multi-amp setup, the T400-4 powers front channels with clarity while leaving room to bridge for a sub, all while fitting in tight spaces thanks to its compact, convection-cooled chassis. The flexible filtering and EQ tools let you tailor tonal balance to your speakers and vehicle acoustics, with solid protection and standard automotive voltage tolerance to handle daily driving.