Rockford Fosgate Power Series T400-4 4-Channel Amplifier
Key features
- Amplifier channels: 4
- RMS per channel at 4 ohms: 60 W
- RMS per channel at 2 ohms: 100 W
- Frequency response: 20 Hz–20 kHz (±1 dB)
- Input sensitivity: 150 mV–5 V (RCA)
- Crossover: variable 50–500 Hz, 24 dB/octave Butterworth
Rockford Fosgate Power Series T400-4 4-Channel Amplifier is backordered and will ship as soon as it is back in stock.
Rockford Fosgate Power Series T400-4 4-Channel Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Build a four-channel car audio system with flexible front/rear control using the Rockford Fosgate Power Series T400-4 4-channel amplifier. Its 4Ω and 2Ω power ratings, bridgeable design, and compact chassis support several system layouts, including installation in tight spaces such as under a front seat.
Key Features & Benefits
- Four-channel output: Power front and rear speakers for a system with front/rear fading.
- Bridgeable channels: Use bridged output for a sub or subs, with a listed rating of 200W x 2 @ 4Ω bridged.
- Adjustable filtering: Front and rear high-pass and low-pass crossovers let you tailor filtering within the listed ranges.
- Punch EQ: Front and rear Bass/Treble boosts provide tonal adjustment; Remote Punch EQ is optional.
- Compact chassis: The 2.14-inch height and convection-cooled design suit space-conscious installation planning.
- Protection indicators: Power and Thermal Protect indicators provide status information.
Technical Specifications
| Amplifier type | 4-channel MOSFET output stage; Class A/B topology |
|---|---|
| Power output | 60W x 4 @ 4Ω; 100W x 4 @ 2Ω; 200W x 2 @ 4Ω bridged |
| Dynamic Power (PVC/PowerCube) | 84W x 4 @ 4Ω; 139W x 4 @ 2Ω; 272W x 2 @ 4Ω bridged |
| Frequency response | 20 Hz to 20 kHz ±1 dB |
| Efficiency | 69% @ 4Ω; 68% @ 2Ω |
| THD+N | <1.0% at both 4Ω and 2Ω |
| Front/Rear crossovers | HP 50–500 Hz and LP 50–500 Hz; 24 dB/octave |
| EQ | Front/Rear Punch EQ with Bass/Treble boosts; optional Remote Punch EQ |
| Inputs | 2/4 channel input switch; Front and Rear 1 RCA pair each |
| Connections | Audiophile-grade speaker connections; 8 AWG–4 AWG power input; 8–18 AWG speaker outputs |
| Indicators and compliance | Power and Thermal Protect indicators; CTA-2006 compliant |
| Dimensions and weight | 2.14" H × 8.14" W × 13.66" D; 11.9 lb |
| Warranty | 2-Year Warranty |
Why Choose This Product?
The T400-4 gives you options for a multi-amp car audio system without limiting it to one channel arrangement. Run four channels for front and rear speakers, or use the bridgeable design when your system calls for subwoofer amplification.
Class A/B topology and the stated efficiency figures offer useful details when comparing amplifier designs. Adjustable crossovers and Punch EQ add tools for tailoring the system’s tonal balance.
Installation & Compatibility Notes
Plan space for the amplifier’s 2.14" H × 8.14" W × 13.66" D chassis and 11.9 lb weight. The product description notes tight-space installation, including under a front seat; confirm available mounting space and installation requirements for your vehicle.
Check your speaker or subwoofer load against the listed 4Ω and 2Ω ratings, and use the listed 4Ω bridged rating when planning bridged output. The specified power input range is 8 AWG–4 AWG, and speaker outputs accept 8–18 AWG.
Frequently Asked Questions
What is the T400-4’s rated power output?
It is rated at 60W x 4 @ 4Ω and 100W x 4 @ 2Ω. Bridged output is listed as 200W x 2 @ 4Ω.
Can I use the T400-4 with front and rear speakers?
Yes. Its four-channel design supports front/rear fading in a stereo system.
What crossover adjustments are available?
Front and rear high-pass and low-pass crossovers are listed from 50–500 Hz, with a 24 dB/octave slope.
How much installation space should I allow?
The amplifier measures 2.14" H × 8.14" W × 13.66" D and weighs 11.9 lb.
What input connections does it have?
It has a 2/4 channel input switch, with one RCA pair each for front and rear inputs.
Explore More
Explore the Rockford Fosgate brand profile to learn more about the brand. Shop 12 Volt Outlet for car audio equipment to plan your system around the T400-4.
