Hertz HMD8 DSP 8-Channel Class D Marine Amplifier with 9-Channel DSP, 85W RMS x 8 @ 4 Ohms (78213000)

The Hertz HMD8 DSP is a 8-channel full-range with 9-channel dsp marine amplifier engineered for demanding boat audio systems. Its Class D architecture and purpose-designed marine construction provide controlled power delivery to compatible loudspeakers, with performance dependent on the connected load and channel configuration. Integrated digital signal processing adds system calibration and routing options beyond a conventional amplifier.

Key Features

• Integrated nine-channel DSP with dedicated PC configuration software
• Eight Class D amplified channels and bridgeable output configuration
• Support for three boat listening zones
• High-level and preamplifier source integration
• Marine corrosion-resistant amplifier construction

Technical Specifications

• Amplifier type: Class D
• Channel arrangement: 8-Channel Full-Range with 9-Channel DSP
• Channels: 8
• Output power ratings:
• 85W RMS x 8 at 4 ohms
• 130W RMS x 8 at 2 ohms
• 260W RMS x 4 bridged at 4 ohms
• Maximum summed advertised power: 1040W

Compatibility

• Compatible with marine audio sources and speaker systems that meet the listed electrical input and impedance requirements
• Use 12V nominal electrical configuration; do not substitute a 24V-specific amplifier variant
• DSP configuration requires compatible control software, input connections and signal routing

Installation & System Integration

• Choose conductor size, circuit protection, and battery capacity based on the installed system current draw
• Match each speaker or subwoofer impedance to the manufacturer load ratings, observing all bridging limits
• Mount away from standing water with suitable airflow and secure corrosion-resistant terminations
• Configure gain, filter frequencies, and any digital processing prior to high-volume operation