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Introducing the MOTORSPORT Series Amplifiers from Diamond Audio - designed to deliver exceptional sound quality while enduring the toughest outdoor elements. Engineered with superior full-range Class D Digital Technology, these amplifiers generate impressive RMS power within a compact footprint.
Perfect for boats, UTVs, motorcycles, or any mobile audio application, MOTORSPORT amplifiers bring the renowned Diamond Audio listening experience to outdoor settings. Their water-resistant construction and conformal-coated multi-layer circuit boards ensure reliability in marine applications and harsh environments.
Enjoy noise-free operation with balanced differential inputs, and benefit from full-range digital Class D technology with DirectFET power MOSFET output stage. The 12dB per octave adjustable crossovers and phase control allow for precise system tuning, while top-mounted controls provide convenient adjustment.
Simplifying installation, the selectable 3-option Auto Turn-On Mode circuit is designed to work with any OEM head unit. When quality, precision, and performance are essential, look no further than the MOTORSPORT Series Amplifiers from Diamond Audio. Upgrade your outdoor audio system today and experience unparalleled sound and durability.
RMS Power (2 ohm ): 400W X 2 RMS Power (4 ohm ): 300W X 2 Bridged (Mono 1 ohm ): N/A Bridged (Mono 2 ohm ): N/A Bridged (Mono 4 ohm ): 800W X 1 (4 ohm ONLY) Power Supply: Full PWM Power Supply Threshold: 10.0V-17.0V (DC) Idle Current: (0.7A) THD 4 (1KHz @4 ohm ): 0.05% S/N Ratio (A weighted @1W): -77.2dBA S/N Ratio (A weighted @FP): -98.9dBA Low Input Level: 0.2mV-10.0V High Input Level: Up to 25W RMS Low Input Level: 22K ohm High Input Level: N/A Output Impedance: 0.047 ohm Damping Factor (50Hz @ 4 ohm ): >250 Bandwidth (-3dB): 10Hz-35KHz Variable High-Pass: 40Hz-400Hz Variable Low-Pass: 40Hz-400Hz Variable Sub-Sonic: N/A ATC: 40A L x W x H: 9.74" x 5.27 x 1.75 (247.6mm x 133.9mm x 44.5mm) Tech Support:
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.








