All orders are shipped from the UK. All orders placed before 12:00pm Monday to Thursday will be processed the same day.
Orders placed after 12:00pm Friday and before 12:00pm Sunday will be processed on Monday. Process time can vary depending on location of stock.
If a product is "Out Of Stock", you can still purchase on back order but there will be an average 3-4 week lead time to receive it
*All times stated are relevant to London Time*
Product Details
The JL Audio MHD600/4-24V is a genuine, full-range 4-channel Class D marine amplifier built for 24V negative-ground vessels. It uses JL Audio’s Single-Cycle Control™ switching design and a tightly regulated R.I.P.S. power supply to deliver consistent output with excellent sound quality across a wide range of speaker loads.
- Rated power (RMS): 150W x 4 @ 1.5–4Ω (22–29V)
- Bridged power (RMS): 300W x 2 @ 3–8Ω (22–29V)
- Frequency response: 6 Hz – 30 kHz (+0/−1 dB)
- Crossovers: Front & Rear filter sets; High-Pass or Low-Pass; 12 dB/oct Butterworth or 24 dB/oct Linkwitz-Riley; 50–500 Hz; defeatable
- Inputs: Differential-balanced RCA (Front/Rear); selectable 200 mV–2 V (Low) or 800 mV–8 V (High); 2/4-channel input mode
- Preamp outputs: 2-channel buffered pass-through; selectable “Front” only or summed (Front+Rear)
- Electrical: Recommended main fuse 25A (AFS/AGU/MaxiFuse™); accepts 8–4 AWG power/ground (8 AWG minimum recommended)
- Chassis size (L×W×H): 10.74" × 7.85" × 1.93" (273 × 199.5 × 49 mm), excluding connectors
- Marine-ready construction: Powder-coated chassis, gasketed control cover and corrosion-resistant hardware (designed for marine use, but not waterproof)
- Optional accessories: JL Audio HD-RLC remote level controller; HD Stack Kit for stacking compatible HD/MHD amplifiers
OEM references: MHD600/4-24V / 600/4-24V (JL Audio item no. 98227). TMP Global SKU: JLMHD600/4-24V.
Before ordering, confirm ratings, impedance load, wiring and fitment for your specific vessel. If you’re unsure which speakers, wiring or additional amplifiers to pair with this unit, contact our parts experts.
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