JBL JBLSTAGEGT80021AM 2-Channel Class-D Car Amplifier

The JBL JBLSTAGEGT80021AM is a compact two-channel Class-D car amplifier designed to add clean, controlled power to an upgraded vehicle audio system. It delivers 80 watts RMS per channel at 4 ohms or 130 watts RMS per channel at 2 ohms, making it suitable for powering a pair of speakers. It can also be bridged to provide 260 watts RMS to one 4-ohm full-range speaker load.

This amplifier is a practical choice for listeners who want more output and control than a factory head unit can provide. Its wide input-sensitivity range supports both low-level and high-level signal sources, helping it work with many aftermarket and factory-radio installations. A high-level input cable is included for systems that use speaker-level connections.

The STAGE GT 80021 provides full-range amplification from 20 Hz to 20 kHz, so it can be used with component speakers, coaxial speakers, or other appropriate full-range drivers. Variable high-pass and low-pass filters let the installer direct the frequency range sent to the connected speakers. This helps match the amplifier to the speakers and the role they serve in the system.

For tonal adjustment, the amplifier includes variable bass EQ centered at 45 Hz with a 0 to 12 dB adjustment range. The onboard controls allow sound tuning without requiring an external processor for basic crossover and bass-level setup. Its Class-D platform is designed for efficient operation in a compact chassis.

The JBLSTAGEGT80021AM is well suited to a front-stage or rear-speaker upgrade, or to a bridged single-speaker application within its rated load requirements. It operates from 9 to 16 volts and is compatible with start/stop vehicle systems. Built-in protection circuits monitor electrical and thermal operating conditions for added system protection.

Key Features

• Two-Channel Class-D Design: Powers a pair of speakers with compact, efficient amplification.
• Bridged 4-Ohm Output: Delivers 260 watts RMS to one compatible full-range load.
• Variable Crossovers: High-pass and low-pass filtering helps tailor speaker frequency range.
• Adjustable Bass EQ: Provides 0 to 12 dB of boost at 45 Hz.
• High- And Low-Level Inputs: Supports factory-radio speaker outputs and RCA-level sources.
• Protection Circuitry: Helps guard against DC, voltage, current, and thermal faults.

Design & Installation

The amplifier uses a compact JBL Stage GT chassis measuring 6-3/16 inches wide, 1-15/16 inches high, and 5-7/32 inches deep. Its compact footprint can simplify placement where available mounting space is limited. The unit weighs 2.34 pounds and includes mounting screws with washers.

Install the amplifier using properly sized power, ground, speaker, and signal wiring selected for the vehicle and system design. Use the included high-level input cable when connecting to a speaker-level source, or use the line-level inputs with a compatible RCA source. Set the input level, crossover mode, crossover frequency, and bass EQ to suit the connected speakers and avoid operating below the amplifier's rated impedance configurations.