Skip to main contentSkip to footer
Slide 1 of 6

Overview

1,200W RMS at 2Ω or 1Ω600W RMS at 4Ω1-ohm stable designDual mono subwoofer outputsAdjustable low-pass and subsonic filtersIPX6-rated waterproof chassisCompatible with RUX-M-UNIV Bass Knob

Alpine M-A120M 1200W Mono Marine Amplifier with IPX6 Waterproof Chassis

Model: M-A120M
Web Code: 20092284
Sold and shipped by | 4.6 seller rating (255 reviews)

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Enjoy on orders from this seller.

Seller Return Policy

Read return policy

Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

The Alpine M-A120M is a powerful mono marine amplifier designed to deliver deep, controlled bass in demanding on-water environments. With up to 1,200 watts RMS, an IPX6-rated waterproof chassis, and rugged protection against salt, fog, and UV exposure, it provides reliable performance from the dock to open water.

Powerful, Flexible Bass Performance

The amplifier delivers 600 watts RMS at 4 ohms and up to 1,200 watts RMS at both 2 ohms and 1 ohm, making it suitable for a variety of subwoofer configurations. It can power a single 10-inch or 12-inch subwoofer or two compatible 4-ohm subwoofers.

Marine-Ready Construction

Built specifically for marine applications, the M-A120M features an IPX6-rated waterproof chassis, salt and fog resistance tested to ASTM B117 standards, and UV resistance tested to ASTM G154 standards. A watertight top-panel cover and protective terminal boots help safeguard connections in harsh conditions.

Advanced Bass Tuning

The M-A120M provides adjustable low-pass and subsonic filters, parametric bass EQ, and a gain-setting clip indicator for precise system tuning. These controls make it easy to match the amplifier to your subwoofer, enclosure, and listening environment for clean, controlled bass.

Reliable Thermal Performance

A large finned heat sink and advanced thermal protection help manage heat during extended listening sessions. If temperatures become excessive, the amplifier automatically reduces output to protect the system and restores full performance once operating temperatures return to normal.

Easy System Integration

The amplifier supports high- and low-level inputs, dual mono subwoofer outputs, detachable ABYC-compliant terminals, 0 AWG power terminals with 4 AWG reducers, and 10 AWG speaker outputs. All connections are positioned along one side for a cleaner installation. It is also compatible with the optional RUX-M-UNIV Bass Knob for convenient remote bass-level control.

The Alpine M-A120M combines high-output performance, flexible tuning, thermal protection, and marine-ready durability in one powerful amplifier. It's an excellent choice for boaters looking to add deep, controlled bass that can keep up with life on the water.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • Yukon
  • Northwest Territories
  • Nunavut
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
See our return policy to find specific return information for this product and steps on how to return by mail.