Product info:
- Featured in our article: Best 4-channel car amplifiers for 2026
- 4-channel amplifer
- 150 watts RMS x 4 (rated power from 1.5 to 4 ohms)
- 300 watts RMS x 2 bridged (rated power from 3 to 8 ohms)
- variable high- and low-pass filter (50-500 Hz 12 or 24dB/octave)
- removable power and speaker plugs
- optional wired remote for level control
- optional HD stacking kit for stacking multiple HD amps together
- Class D amplifier design
- MOSFET power and output stages
- differential-balanced inputs eliminate noise from your vehicle's electrical system
- speaker- and preamp-level inputs (speaker-level input requires an optional adapter)
- preamp outputs
- 4-gauge power and ground leads and a 50-amp fuse recommended — wiring and hardware not included with amplifier
- no onboard fuses — when installing multiple amps in a system, an additional 50-amp in-line fuse between the distribution block and the amplifier is recommended
- 10-13/16"W x 2"H x 8-7/8"D
- warranty: 2 years
- MFR # 010-03318-00
- Item # 136HD6004
-
JL Audio HD Series HD600/4 owner's manual
If you need assistance accessing this owner's manual, please give us a call. - Four-channel class-D full-range amplifier
- Power/Ground/Turn-On plug
- 2 Speaker connection plugs
- 4 Mounting brackets
- 2mm Allen-wrench
- 2.5mm Allen-wrench
- 3mm Allen-wrench
- 3.5mm Allen-wrench
- 4mm Allen-wrench
- 5mm Allen-wrench
- 4 Mounting bolts
- Owner's Manual
| Performance | ||
|---|---|---|
|
|
150 x 4 |
|
|
|
600 x 2 | |
|
|
150 x 4 | |
| Power at 1 Ohm (Watts x Channels) | --- | |
|
|
300 x 2 | |
|
|
3 | |
|
|
1.5 | |
|
|
6-30k Hz | |
|
|
0.03% | |
|
|
110 dB | |
|
|
14.5v | |
| Features | ||
|---|---|---|
|
|
D | |
|
|
No | |
|
|
Optional | |
|
|
50-500 Hz | |
|
|
12/24 dB | |
|
|
50-500 Hz | |
|
|
12/24 dB | |
|
|
No | |
|
|
N/A | |
|
|
No | |
|
|
50 | |
|
|
Yes | |
|
|
2 | |
|
|
8-7/8 | |
|
|
1-15/16 | |
|
|
10-13/16 | |
|
|
2 Years | |
|
|
2 Years | |