Rockford Fosgate Power Series T400x4ad 4-Channel Amplifier

The Rockford Fosgate Power Series T400x4ad is an ultra-compact 4-channel amplifier built on Rockford Fosgate’s Class-AD technology, delivering 400 total watts with consistent output at 4-Ω and 2-Ω loads for flexible installations. It’s designed for car audio enthusiasts who need compact footprint, robust protection, and flexible integration in tight spaces.

• Class-AD technology: Rockford Fosgate’s efficient architecture maintains steady output across impedance changes, aiding reliable performance in diverse speaker combos.
• 4/2 Ohm multi-impedance with Constant Power: The amp maintains similar power when driving 4-Ω or 2-Ω loads, simplifying speaker choice and wiring while preserving dynamics.
• 400 Watts total power (100W x 4 @ 4Ω / 100W x 4 @ 2Ω): Clear, balanced four-channel drive for mids and highs; the numbers indicate strong, clean per-channel performance in typical 4-channel builds.
• Dynamic Power (PVC/PowerCube®): 128W x 4 @ 4Ω, 152W x 4 @ 2Ω, 290W x 2 @ 4Ω bridged, enabling higher peak output when a pair of channels is used in bridge mode.
• 8 AWG power/ground with upgraded RCA connectors: Sturdy power delivery and reliable signal connections, supporting stable current delivery in demanding installs.
• Remote-Out with high-level inputs: Auto turn-on compatibility keeps head-unit wiring simple and reduces remote wiring clutter.
• C.L.E.A.N. input/output clip detection and indicator LEDs: Real-time monitoring helps protect speakers and amplifier by signaling clipping and fault conditions.
• Dual fan cooling and extruded heatsinks: Dual-fan forced induction and heat-dissipating fins keep the compact chassis cooler under load.
• Frequency Response 20Hz–20kHz ±1dB; Input Sensitivity 150 mV to 12 V: Wide, flat response suitable for full-range systems with flexible input levels.
• CTA-2006 Compliant: Meets performance standards recognized in the car audio industry.
• Dimensions (H x W x D) 1.6 × 4.3 × 8.3 in: Ultra-compact footprint suitable for tight mounting locations in modern vehicles.
• THD (4-Ω / 2-Ω) < 1%: Low total harmonic distortion across standard operating loads for clean audio reproduction.

Benefits: The T400x4ad suits four discrete channels for front-stage and rear-fill speakers in a single compact chassis, with bridge-capable operation for a two-channel power boost if needed. Its auto turn-on, low/high input flexibility, and CLE.A.N. clip protection help simplify installs while safeguarding your speakers. The combination of Class-AD efficiency, aggressive cooling, and robust power delivery makes this amplifier a strong choice for multi-speaker systems in boats, trucks, or performance cars where space is at a premium.