Gravity GBR600-2D 2-Channel Digital Amplifier

The Gravity GBR600-2D is a compact two-channel digital amplifier for adding dedicated power to a mobile audio system where installation room is limited. It is suited to front or rear speaker upgrades in cars, motorcycles, RVs, ATVs, boats, and similar applications. Its small chassis helps make amplifier placement more practical in tight spaces.

This full-range amplifier can be used in conventional stereo operation for a pair of speakers or bridged for a single compatible 4-ohm load. It is rated for 150 watts RMS per channel at 2 ohms, or 300 watts RMS when bridged at 4 ohms. That flexibility supports a focused speaker upgrade without requiring a large multi-channel amplifier.

The GBR600-2D uses digital amplification and is designed for efficient operation in compact mobile installations. Its RCA stereo input allows connection to an aftermarket source with RCA preamp outputs. The amplifier's compact format is intended to help simplify placement while retaining dedicated external amplification.

Selectable low-pass, full-range, and high-pass crossover modes provide basic system-tuning flexibility. High-pass mode can be useful when powering mids or full-range speakers, while low-pass mode can support an appropriate bass-focused setup. Full-range mode leaves frequency selection to the connected source or system design.

For an upgrade path, the GBR600-2D is a practical choice for powering a stereo pair first, with the option to bridge the channels later if system requirements change. Match connected speakers and wiring to the amplifier's stated impedance ratings before installation. Proper power, ground, speaker, and signal connections are required for dependable operation.

Key Features

• Two-Channel Design: Powers a stereo pair of front or rear speakers from one compact amplifier.
• Bridgeable Output: Combines both channels for a compatible 4-ohm mono load.
• 150W x 2 RMS: Delivers its stated stereo rating into 2-ohm loads.
• RCA Stereo Input: Connects to compatible aftermarket source-unit preamp outputs.
• Selectable Crossover Modes: LPF, Full, and HPF modes support basic system tuning.
• Micro-Compact Chassis: Fits applications with limited available mounting space.

Design & Installation

The GBR600-2D has a compact digital-amplifier chassis measuring 1.5 x 4 x 6.75 inches. Its small footprint is intended for installations where a conventional full-size amplifier may be difficult to mount. The design is specified for use across vehicle, powersports, RV, and boat audio applications.

Mount the amplifier securely in a location with appropriate clearance and route power, ground, speaker, and RCA signal wiring safely. Use stereo mode with two compatible 2-ohm or 4-ohm speaker loads, or use bridged mode only with a compatible 4-ohm load. Select HPF, LPF, or Full crossover mode according to the speakers and system role being powered.