The JL Audio MHX280/4 is a genuine compact, full-range 4-channel Class D marine amplifier engineered for space-limited installations where moisture and corrosion resistance matter. With JL Audio’s efficient NexD™ switching design, it delivers clean power without overloading smaller charging systems.

• Rated RMS power @ 14.4V (<1% THD+N): 50W x 4 @ 4Ω, 70W x 4 @ 2Ω, 140W x 2 bridged @ 4Ω
• Rated RMS power @ 12.5V (<1% THD+N): 36W x 4 @ 4Ω, 52W x 4 @ 2Ω, 100W x 2 bridged @ 4Ω
• Frequency response: 20 Hz – 20 kHz (+0, -1 dB)
• Crossovers: Independent front/rear selectable HPF or LPF (defeatable), 35–300 Hz, 12 dB/oct
• Input sensitivity (dual-range): 250 mV–4 V (Low) or 750 mV–15 V (High)
• Minimum impedance: 2Ω per channel (unbridged) / 4Ω bridged
• Marine-ready construction: IPX6 water-resistant design, corrosion-resistant cast-aluminum chassis, stainless hardware & gasketed control cover
• Electrical: 35A fused, 8 AWG power/ground wire recommended
• Dimensions (H×W×D): 1.77" × 8.66" × 3.09" (45 × 220 × 78.5 mm)

OEM references: MHX280/4 (JL Audio MFR #98403).
Supplier SKU: JLMHX280/4.

Before ordering, confirm ratings, specifications and fitment for your speakers/subwoofers and installation environment to avoid mismatches or equipment damage.