Product info:
- Featured in our article: Best 4-channel car amplifiers for 2026
- 4-channel car amplifier
- 75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
- 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode)
- Class D amplifier design with NextD™ switching amp technology
- differential-balanced inputs help eliminate noise
- variable low- and high-pass filters (50-500 Hz, 12 dB/octave)
- LED clip lights help set gain
Other Features:
- blue LED accent lighting
- preamp inputs and outputs
- speaker-level inputs (speaker wire to RCA adapter required)
- 4-gauge power and ground leads and a 40-amp fuse recommended — wiring and hardware not included with amplifier
- no onboard fuses — when installing multiple amps in a system, an additional 40-amp in-line fuse between the distribution block and the amplifier is recommended
- 9-13/16"W x 2-1/8"H x 7"D
- warranty: 2 years
- MFR # 010-03109-00
- Item # 13698621
-
JL Audio RD400/4 owner's manual
- 4-Channel amplifier
- 2.5mm Allen wrench
- Self-adhesive JL Audio badge
- Owner's manual
| Performance | ||
|---|---|---|
|
|
75 x 4 |
|
|
|
N/A | |
|
|
100 x 4 | |
| Power at 1 Ohm (Watts x Channels) | --- | |
|
|
200 x 2 | |
|
|
4 | |
|
|
2 | |
|
|
12-22k Hz | |
|
|
1% | |
|
|
104 dB | |
|
|
14.4v | |
| Features | ||
|---|---|---|
|
|
D | |
|
|
No | |
|
|
No | |
|
|
50-500 Hz | |
|
|
12 dB/oct | |
|
|
50-500 Hz | |
|
|
12 dB/oct | |
|
|
No | |
|
|
N/A | |
|
|
No | |
|
|
40 | |
|
|
Yes | |
|
|
2 | |
|
|
9-13/16 | |
|
|
2-1/8 | |
|
|
7 | |
|
|
2 Years | |
|
|
2 Years | |