JBL Stage GT90041 4-Channel Class D Amplifier 520W RMS Bridgeable

JBL Stage GT90041 4-Channel Class D Car Amplifier 520W RMS Bridgeable

A Stage GT Series 4-channel Class D car amplifier from JBL, the Stage GT90041 delivers 90W RMS at 4Ω per channel, 130W RMS at 2Ω per channel, or 260W RMS bridged at 4Ω per channel pair (1480W peak total), with variable highpass and lowpass filters (32-320Hz), variable bass EQ at 45Hz (0-12dB), high-level and low-level inputs, and full onboard protection circuitry in a compact 236.9 x 49.5 x 132.5mm housing.

Product Overview

The JBL Stage GT90041 is a 4-channel Class D car amplifier from the Stage GT Series, providing high output power and versatile configuration options for complete front and rear speaker systems, active component setups, and bridged subwoofer applications. The Class D output stage delivers 90W RMS per channel at 4Ω, 130W RMS per channel at 2Ω in full 4-channel mode, or 260W RMS bridged per channel pair at 4Ω for a 2-channel bridged configuration, with a total peak power of 1480W.

The wide input sensitivity range on both low-level (0.2-5V) and high-level inputs (1-25V) ensures compatibility with virtually any audio source in the automotive market, with two high-level input cables included for direct OEM speaker-level connection. The variable highpass and lowpass filters (32-320Hz) provide onboard crossover control for tailoring sound to the characteristics of the vehicle, and the variable bass EQ at 45Hz (0-12dB) delivers adjustable low-frequency boost. Full onboard protection covers short circuit, overvoltage, undervoltage, and overtemperature conditions. Operating voltage is 9-16V. Fused at 2 x 30A.

Features & Benefits

90W RMS per Channel at 4Ω / 260W RMS Bridged at 4Ω per Pair: Delivers 90W RMS at 4Ω and 130W RMS at 2Ω in 4-channel mode, or 260W RMS bridged per channel pair at 4Ω, providing versatile higher-power output for front and rear full-range speakers, active component systems, and bridged subwoofer applications with more headroom than the Stage GT60041.

Class D Technology - High Efficiency and Low Heat Dissipation: The Class D output stage maximises power output while minimising heat generation for reliable performance in compact installation environments.

Variable Highpass and Lowpass Filters - 32-320Hz: Both the highpass and lowpass filters are independently adjustable from 32Hz to 320Hz, providing onboard crossover control for component speaker separation and subwoofer frequency limiting from the same 4-channel unit.

Variable Bass EQ at 45Hz - 0-12dB: Up to 12dB of adjustable low-frequency boost centred at 45Hz for subwoofer and full-range bass performance enhancement tuned to the vehicle acoustic environment.

High-Level and Low-Level Inputs with Wide Sensitivity Range: Low-level inputs accept 0.2-5V from aftermarket head units and DSP processors. High-level inputs accept 1-25V from factory OEM head unit speaker outputs. Two high-level input cables are included for direct factory speaker-level connection.

Full Onboard Protection Circuitry: Protection against short circuit, overvoltage, undervoltage, and overtemperature for long-term amplifier reliability.

Compact Housing: The 236.9 x 49.5 x 132.5mm dimensions suit installation in vehicles with limited mounting space.

What's in the Box

• JBL Stage GT90041 4-Channel Amplifier
• 2 x High-Level Input Cables
• 2 x Spare Fuses
• 4 x Mounting Screws with Washers
• 2 x Allen Keys
• 2 x JBL Stickers
• QR Code for Owner's Manual
• Safety Instructions

Technical Specs

Compatible With

The Stage GT90041 is compatible with 9-16V vehicle electrical systems. Low-level inputs accept 0.2-5V from aftermarket head units and DSP processors. High-level inputs accept 1-25V from factory OEM head unit speaker outputs. Bridged operation requires a minimum 4Ω load per bridged channel pair. Stereo operation is rated to a minimum 2Ω per channel. Confirm speaker impedance against the rated output configurations before purchase.

Frequently Asked Questions

What configurations can the Stage GT90041 be used in?

The Stage GT90041 supports classic 4-channel operation (4 x 90W at 4Ω) for front and rear speaker systems, 2-channel bridged operation (2 x 260W at 4Ω) for a bridged component speaker pair or subwoofer, or a 3-channel configuration using 2 full-range channels and 1 bridged channel pair for a subwoofer.

What is the minimum bridged impedance for the Stage GT90041?

The minimum bridged impedance is 4Ω per bridged channel pair. Do not connect loads below 4Ω in bridged mode.

How does the Stage GT90041 differ from the Stage GT60041?

Both are 4-channel Stage GT Series Class D amplifiers with the same crossover and bass EQ controls and identical box contents. The Stage GT90041 delivers higher per-channel output: 90W RMS at 4Ω and 130W RMS at 2Ω per channel (260W bridged) versus the GT60041's 65W at 4Ω and 90W at 2Ω (180W bridged). The GT90041 is also rated to 1480W peak versus the GT60041's 1240W and is fused at 2 x 30A versus the GT60041's 2 x 20A. Choose the GT90041 for higher output power requirements.

Does the Stage GT90041 include high-level input cables?

Yes. Two high-level input cables are included for direct connection to factory OEM head unit speaker outputs.

What wiring gauge is recommended for the Stage GT90041?

The Stage GT90041 is fused at 2 x 30A. Confirm recommended wiring gauge with your installer based on total system power draw. A minimum 8 AWG main power and ground cable is generally suited to an amplifier at this power and fuse rating.