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JBL Grand Touring Series GTO755.6 II

6-channel car amplifier
60 watts RMS x 4 + 107 watts RMS x 2

Item # 109GTO7556

JBL Grand Touring Series II amplifiers create a sound and sight sensation.

Find what Fits your vehicle

JBL Grand Touring Series II amplifiers create a sound and sight sensation.

Discontinued item

Item # 109GTO7556

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Decades of expertise at your fingertips.

Car-specific installation packages

Deep discounts on the essential accessories that help your new gear work with your car.

Since 1974

Years of experience making people happy.

About the JBL Grand Touring Series GTO755.6 II

JBL Grand Touring Series II amplifiers create a sound and sight sensation. The aggressively modern amplifier case features a see-through cover which allows you to install internally-mounted neon tubes for an entrancingly cool backlighting effect.

JBL Grand Touring Series II amplifiers create a sound and sight sensation. The aggressively modern amplifier case features a see-through cover which allows you to install internally-mounted neon tubes for an entrancingly cool backlighting effect.

The GTO755.6 II 6-channel amplifier offers amazing versatility. From subwoofers to full-range speakers, it can power a variety of systems while configured as a 3-, 5-, or 6-channel amplifier. The efficient power supply delivers a big sound with low distortion, while the variable frequency filters adjust the amp's output to best fit your system's specific needs. When you're craving more thump, the bass boost circuit kicks things up a notch.

The convenient top-mounted controls make it easier to set up and tweak your amp, while preamp outputs simplify adding another amp into your system. Speaker-level inputs allow hookup to a factory stereo. An optional wired sub level remote is available.

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Product highlights:

  • 6-channel car amplifier
  • 60 watts RMS x 4 + 107 watts RMS x 2 at 4 ohms (80 watts RMS x 4 + 150 watts RMS x 2 at 2 ohms)
  • 160 watts RMS x 2 + 300 watts RMS x 1 in bridged mode (4-ohm stable in bridged mode)
  • optional internal neon lighting (accommodates Street Glow AN9 tubes or equivalent, tubes not included)
  • variable high- and low-pass filters on channels 1-4, low-pass only on sub channels (32-320 Hz, 12 dB per octave)
  • bass boost on sub channels (0-12 dB)
  • MOSFET power supply
  • speaker- and preamp-level inputs
  • preamp outputs
  • CEA-2006 compliant
  • fuse rating: 30A x 2
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 19-7/8"W x 2-3/8"H x 12-3/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # GTO7556

What's in the box:

  • 6-channel amplifier with two 30A fuses inserted into the chassis
  • 2 Extra 30A ATC fuses
  • 6 Self-tapping screws
  • 4 Neon tube mounting clips (neon tubes are an optional accessory)
  • Two 11" speaker-level input harnesses
  • Owner's manual
  • Amplifier Quick-Start Guide
  • Warranty Card
  • "JBL" sticker

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Features
Inputs and Outputs Notes

Features

Internal Crossovers: The amplifier's internal front and rear crossovers are 12dB/octave filters, independently selectable for high-pass, low-pass, or flat (full range) operation. Each crossover is variable from 32 Hz to 320 Hz. The low-pass filter for the subwoofer channels can be adjusted from 32 to 320 Hz, and also has a slope of 12 dB per octave.

Bass Boost: For added low frequency performance, the subwoofer channels have a 0 to +12 dB variable bass boost centered at 50 Hz.

Protection Circuitry: To keep the amplifier safely operating, the protection circuitry is triggered in the following situations: DC voltage on amplifier output, overheating, over voltage, under voltage, and when there is a short circuit in the system.

Optional Neon Tubes: Using the supplied mounting clips, you can install optional Street Glow AN9 neon tubes in the amplifier. The neon tubes are installed by removing the amplifier's top panel, which is transparent plastic.

Optional Remote Level Control: The amp has an RJ-11 jack for use with the optional JBL remote level control (item #109JBLRLC). This will allow the subwoofer level to be adjusted from the listening position.

Inputs and Outputs Notes

Power Connections: The power and ground terminals are set-screw terminals and will accommodate up to 4-gauge wire. The remote turn-on terminal will accept up to 8-gauge wire. A Phillips-head (not supplied) is required to tighten/loosen the terminals.

Speaker Connections: The set-screw speaker terminals will accommodate up to 8-gauge wire. A Phillips-head (not supplied) is required to tighten/loosen the terminals.

High Level Input:The amp has two speaker-level inputs, one for the front channels and one for the rear channels. Each input has a 4-pin jack for use with the supplied harnesses.

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