JBL® 4-Channel Car Amplifier

Product Overview

Amplifiers with a small footprint and big impact. GTR mono and full-range, multi-channel amplifiers deliver the efficiency and power you expect from Class D amps—and the performance you expect from JBL. Each model in the lineup will accept both high-level or low-level inputs, allowing the JBL Stadium amplifiers to be added to virtually any car audio system, including factory installed systems. The 2-, 4- and 5-channel amplifiers offer Bluetooth® audio streaming, exclusive Clari-Fi™ music restoration technology that analyzes and improves the audio quality of compressed files in real time, a multi-pairing Party Mode that lets anyone in the car stream music, and a cabin-mounted control panel. GTR amplifiers give you the power to shape your car audio experience in new ways.

Bluetooth® Audio Streaming and Telephony Support

The two full-range, multi-channel GTR amplifiers (104 and 7535 models) feature Bluetooth® connectivity for wireless audio streaming from phones and other devices. You can receive phone calls through your car audio system, just by touching a button on an included control panel.

Clari-Fi™ Audio Restoration Technology

Clari-Fi™, a proprietary DSP technology, is incorporated in the GTR-104 and GTR-7535 amplifiers, analyzes music files and improves highly compressed digital music files in real time. A predictive algorithm restores audio content that is discarded in the compression process. Clari-Fi™ works with all playback devices and audio sources. It extends high-frequency bandwidth, restores the natural warmth of vocals and widens the sound stage. In short, Clari-Fi™ gives your digital music back its soul.

Party Mode Wireless Pairing

The GTR-104 and GTR-7535 amplifiers offer Party Mode, a multi-pairing capability that enables Bluetooth® devices to stream audio individually. When Party Mode is selected from the cabin-mounted control panel, anyone in the car can drive the music.

Cabin-Mounted Control Panel

The GTR-104 and GTR-7535 multi-channel amps come with a wired control panel that incorporates an omni-directional microphone and puts a range of functions at your fingertips. You can activate Bluetooth® pairings, accept and end phone calls, select Party Mode and cancel Clari-Fi™.

Class D Amplification

Every GTR amplifier, including the full-range models, is a Class D. These high-efficiency, low-heat amps generate a lot of power without drawing much current, and feature small footprints.

Full-Range Line Outputs

The GTR-104 includes full-range line outputs. This enables them to pass the audio signal to additional amps that power subwoofers, increasing your system configuration options.

High-Level Low Level Inputs

The GTR-104 will accept both high level and low level inputs which allows for interface to both factory head units and aftermarket head unites. A simple switch is provided to properly set the input level correctly. To ease installation from high-level inputs, proprietary bare wire to RCA connector adapters are included.

Variable Electronic Crossover

The GTR-104 has a built-in variable electronic crossover which allows for precision tuning of your speakers. You are able to select full-range, high-pass or low-pass with tuning from 32Hz - 320Hz. On the GTR-104 you can also set the front two channels and rear two channels independently which can come in handy if you are running different sized speakers or running full range speakers and a pair of subwoofers. Our crossovers are low-noise and easily adjustable using a small slotted screwdriver versus finger controlled crossovers to ensure the setting stays put.

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