JBL Stage GT80021 – 2-Channel Class-D Amplifier

The JBL Stage GT80021 is a versatile Class-D amplifier built for clean power and easy installs. Run it as a 2-channel amp for door speakers or bridge it for a subwoofer—either way you get reliable output, adjustable filtering, and a compact chassis that fits tight spaces. High/low-level inputs simplify integration with factory or aftermarket head units, while onboard protection guards against shorts, voltage issues, and overheating. Dial in your system with variable high/low-pass crossovers and a Bass EQ boost at 45 Hz. Power, flexibility, and JBL reliability—buy now at TGM Tools.

Key specifications:

• Maximum power: 800 W peak

• RMS power: 130 W x2 @2Ω / 80 W x2 @4Ω / 260 W x1 @4Ω (bridged)

• Frequency response: 20 Hz – 20 kHz ±1 dB

• THD+N: 1%

• Input sensitivity: 0.2–5 V (low level), 1–25 V (high level)

• Bass EQ: 0–12 dB @45 Hz

• High/Low-pass filters: 32–320 Hz (adjustable)

• Protection: short circuit, over/under voltage, overheating

• Supply voltage: 9–16 V

• Fuse: 1 x 25 A

• Dimensions (W x H x D): 156.9 x 49.5 x 132.5 mm

• Weight: 1.061 kg

What’s in the box:

• 1 x amplifier

• 2 x spare fuses

• 1 x high-level input cable

• 4 x fixing screws with washers

• 2 x Allen keys

• 2 x JBL stickers

• 1 x QR code for user manual

• 1 x safety sheet