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Mono Amplifier JL Audio MX300/1 Genuine, 300W x1 @2Ω Class D, OEM 98406

JLMX300/1

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Product Specifications and Features

The JL Audio MX300/1 is a compact, marine/powersports-ready Class D monoblock amplifier built for clean subwoofer power in tight installations. With a corrosion-resistant cast-aluminum chassis and IPX7 water-resistance, it’s a strong choice for boats, UTVs and other harsh environments.

Power output (14.4V, RMS): 300W x 1 @ 2Ω / 220W x 1 @ 3Ω / 160W x 1 @ 4Ω
Amplifier topology: Class D (JL Audio NexD™ switching design)
Frequency response: 20 Hz – 12 kHz
Low-pass crossover: 40–400 Hz, 24 dB/octave (defeatable)
Infrasonic (subsonic) filter: 20–40 Hz, variable
Bass boost: 0 to +12 dB @ 43 Hz
Output polarity: 0 / 180° switch
Inputs: dual-range section accepts line-level and speaker-level signals
Water & corrosion protection: IPX7-rated chassis, gasketed control cover, stainless hardware
Dimensions (H x W x D): 1.77 in x 8.66 in x 3.09 in (45 x 220 x 78.5 mm)

OEM / identification: JL Audio part number 98406 (model: MX300/1). Supplier: Recmar.

Compatible accessory (optional): JL Audio M-RBC-1 water-resistant remote bass level control (for MX monoblocks in low-pass mode).

Before ordering: confirm impedance, ratings, wiring/fusing requirements and installation fitment for your vessel/system to avoid damage.

Shipping Information

All orders ship from the UK. Orders placed Monday–Thursday before 12:00pm are processed same day. Orders placed Friday after 12:00pm through Sunday are processed the following Monday. Processing times vary by stock location.

Out of stock items can be back-ordered with a typical 3–4 week lead time.

If an item shows "Dispatch Available Today" and you order after 2pm UK time, processing begins the next business day.

All times are in UK BST.

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