Rockford Fosgate PBR400X4D Punch 400W 4-Channel Amp
Compact Punch Boosted Rail Class-D four-channel amplifier
$309.99
Overview
Power a full front and rear stage from a tiny Punch chassis with the Rockford Fosgate PBR400X4D. Continuous output is 50 watts RMS x 4 at 4 ohms, 100 watts x 4 at 2 ohms, and 200 watts x 2 when bridged at 4 ohms. C.L.E.A.N. clip LEDs, selectable high-pass filters, and high-level inputs suit factory-radio upgrades. Plan on 8 AWG power cable and a 60 Amp fuse (sold separately).
Product details
Boosted Rail four-channel power
PBR400X4D brings Punch Boosted Rail Class-D design to a full-range four-channel amp. Rockford rates continuous power at 50 W x 4 at 4 ohms, 100 W x 4 at 2 ohms, and 200 W x 2 bridged at 4 ohms. The 1.53 x 4.25 x 6.75-inch extruded aluminum chassis is aimed at under-seat and tight-panel installs where a conventional 400-watt amp will not fit.
C.L.E.A.N. setup and filtering
Input and output clip LEDs (blue under 0.5% THD, violet at 1%, red at 10% or more) help you set gain without a scope. High-pass filtering is selectable at 60 Hz or 80 Hz at 12 dB/octave; a low-pass at 80 Hz at 12 dB/octave covers bridged sub duty. A 2-channel / 4-channel input switch and RCA or high-level harness inputs cover aftermarket and factory sources.
Wiring and power plan
Power and ground use an 8 AWG detachable compression terminal. Front and rear speaker outputs are 4-pin harnesses for 16 AWG. Plan on a 60 Amp fuse (not included), about 27 A average music current draw, and a suggested 75 A alternator class supply. Convection cooling keeps the compact Punch chassis quiet.
Key features
- Class-D Punch Boosted Rail: 50 W x 4 @ 4Ω; 100 W x 4 @ 2Ω; 200 W x 2 bridged
- Selectable high-pass 60 Hz or 80 Hz; low-pass 80 Hz at 12 dB/octave
- C.L.E.A.N. input and output clip LEDs
- 2-channel / 4-channel input switch with RCA and high-level harness
- 8 AWG power block; recommended fuse 60 A (not included)
- Convection-cooled extruded aluminum chassis
- Dimensions: 1.53" x 4.25" x 6.75"
Specifications
| Weight | 3.1 lbs |
|---|---|
| Dimensions | 6.75 × 4.25 × 1.53 in |
| Brand | Rockford Fosgate |
| Model | PBR400X4D |
| SKU | PBR400X4D |
| Product type | Amplifier |
| Channels | 4 channel |
| Circuit class | Class-D |
| Rated power (RMS) | 50 W x 4 @ 4Ω; 100 W x 4 @ 2Ω; 200 W x 2 bridged @ 4Ω |
| Dynamic power (PowerCube) | 75 W x 4 @ 4Ω; 130 W x 4 @ 2Ω; 270 W x 2 bridged @ 4Ω |
| Total rated power | 400 W |
| Bridgeable | Yes |
| Frequency response | 20 Hz – 20 kHz +/-1 dB |
| Input sensitivity | 150 mV – 12 V |
| Efficiency (average) | >75% |
| THD+N | <1.0% @ 4Ω and 2Ω |
| Signal input | 2CH/4CH switch; RCA low-level; high-level harness |
| Crossover | High-pass 60 Hz or 80 Hz @ 12 dB/octave; low-pass 80 Hz @ 12 dB/octave |
| Visual indicators | Power (blue); protect (red); input clip (red); output clip (blue/violet/red) |
| Power wire gauge | 8 AWG |
| Power input connector | Detachable compression terminal |
| Speaker wire gauge | 16 AWG |
| Speaker output connector | Front/rear 4-pin harnesses |
| Cooling | Convection |
| Recommended fuse | 60 A (not included) |
| Average current draw | 27 A |
| Max current draw | 50 A |
| Suggested alternator | 75 A |
| Operating voltage | 9 – 16 VDC |
| Dimensions (H x W x D) | 1.53" x 4.25" x 6.75" |
| Shipping weight | 3.1 lb (1.4 kg) |
Important notes
- Amplifier only. Power kit, RCA or high-level adapters, speaker wire, and the 60 Amp fuse are sold separately.
- Use 8 AWG power/ground cable matched to the amp’s current draw.
- Front and rear speaker outputs use 4-pin harnesses.
What's in the box
- Rockford Fosgate PBR400X4D amplifier
