Roland GR55S (Black) Guitar Synthesizer


A New Era of Sound, Power, & Performance

The triple-core generator houses a world-class array of virtual guitars, basses, amps, and synth voices

  • Guitar Synthesizer
  • Triple-Core Generator
  • COSM Modelling Technology
  • Built-in USB Audio Player
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Roland GR-55 (Black): Guitar Synthesizer
A New Era of Sound, Power, & Performance

The Roland GR-55 is a revolution in guitar synthesis, with features never before available in any guitar processor. In terms of speed, it’s the fastest ever. It’s also the most accurate, thanks to newly developed pitch-detection technology. As for sound, the triple-core generator houses a world-class array of virtual guitars, basses, amps, and synth voices, enabling tones and textures that have never been heard before. Onstage or in the studio, you can instantly access the GR-55’s huge library of ready-to-use sounds, from pop to rock and beyond, with quick-access category buttons. Welcome to a ground-breaking new era in guitar synthesis!


  •     A revolutionary fusion of guitar synthesis and powerful COSM guitar modelling
  •     Up to four sound sources at a time: two PCM synth tones, plus COSM guitar modelling and normal guitar input
  •     Easy to use and easy to play with hundreds of great, ready-to-use sounds for rock or pop guitarists
  •     Advanced Roland technology provides superb sound quality and lightning-fast processing
  •     Over 900 of Roland’s latest fully editable PCM sounds, including pianos, organs, strings, vintage synths, and much more
  •     COSM guitar and amp modelling
  •     Two types of multi-effects engines, plus global reverb, chorus, and delay effects, and an on-board looper
  •     Built-in USB audio player with foot control
  •     Available with or without GK-3 Divided Pickup

GR-55 (Black): Guitar Synthesizer
A New Era of Sound, Power, & Performance
New Sound Possibilities
The GR-55’s powerful triple-core engine comprises two PCM synthesizers (with over 900 tones powered by the latest Roland synthesis technology) and COSM guitar modelling, featuring a virtual treasure trove of guitar, bass, amp, and synth models. Together, these combined technologies allow you to create unique, revolutionary sounds. The “Metal Synth Lead” preset, for example, combines two types of thick, brilliant synth textures with an overdriven solid-body/humbucking tone for incredible punch and power.

Lightning-Fast Tracking
Thanks to Roland’s decades of research and dedication to guitar synthesizers and powerful new pitch detection technology, the GR-55 is far and away the fastest guitar synth ever. Furthermore, the COSM guitar-modelling engine needs zero detection time, allowing the GR-55 to respond instantly and exactly as you play. The GR-55 detects pitch, velocity, and behaviour for unprecedented response to your performance.

Instant Gratification
Get ready to rock … and fast! The GR-55 puts you instantly in touch with a huge library of amazing sounds, no editing required. The on-board line-up of ready-to-use presets (270, plus 297 user) takes the pain out of the process, with simple category buttons for finding the perfect sound fast. Choose from hundreds of great presets for pop, rock, and beyond, and kick-start your song or jam with unique, powerful sounds that will turn heads and raise fists.

Easy to Use
If you’re new to the world of technology, fear not. The GR-55 is powerful yet extremely friendly. For customising sounds, the EZ Edit feature (made famous in the GT-10) and large LCD takes the guesswork out of the process. And for those who want to go deep, the GR-55 offers huge array of controllable parameters. Pros will appreciate the power of the GR-55 while beginners will love how quick and easy the unit is to operate.

USB Connectivity
The GR-55 conveniently bridges the guitarist to the desktop music production world with its two USB ports. The rear-panel port can be used one for MIDI/Audio data communication; the side-panel port is dedicated to real-time playback of audio files from a USB memory device (sold separately). The GR-55 provides foot control of USB audio playback so your hands never need to leave the guitar.

GR-55 (Black): Guitar Synthesizer
A New Era of Sound, Power, & Performance

Sound Generator
    PCM: 2 tones
    Modeling: 1 tone
    PCM: 910 types
    Modeling: 23 types (guitar mode)
    17 types (bass mode)
    MFX (Multi-Effects): 20 types
    AMP (Preamp): 42 types
    MOD (Modulation): 14 types
    DELAY: 7 types
    REVERB: 5 types
    CHORUS: 4 types
    EQ: 1 type
Patch Memory
    Guitar mode
    Preset: 270 + User: 297
    Bass mode
    Preset: 90 + User: 297
AD Conversion
    24-bit (GK Pickup)
    24-bit + AF method ** (Normal Pickup)
DA Conversion
Sampling Frequency
    44.1 kHz
Nominal Output Level
    OUTPUT jacks: -10 dBu
    GUITAR OUT jack: -10 dBu
Output Impedance
    OUTPUT jacks: 2 k ohms
    GUITAR OUT jack: 2 k ohms
USB Memory Audio Player
    File Format: WAV, AIFF
    Graphic LCD 240 x 64 dots
    GK IN connector (13 pins DIN type)
    GUITAR OUT jack (1/4-inch phone type)
    OUTPUT L/MONO, R jacks (1/4-inch phone type)
    PHONES jack (Stereo 1/4-inch phone type)
    MIDI connectors (IN, OUT) (5-pin DIN type)
    USB COMPUTER connector (supports Hi-Speed USB, USB MIDI and
    USB Audio)
    USB MEMORY connector (supports Hi-Speed USB Flash Memory)
    DC IN jack
Power Supply
    DC 9 V
Current Draw
    700 mA
    AC adaptor
    Owner's manual
    Divided pickup (GK-3) (only for GK included model)
    GK cable (5 m) (only for GK included model)
Options (sold separately)
    Divided pickup: GK-3 (for guitar), GK-3B (for bass guitar)
    GK cable: GKC-5 (5 m), GKC-10 (10 m)
    MIDI foot controller: FC-300
    Unit selector: US-20
Size and Weight
    405 mm
    16 inches
    244 mm
    9-5/8 inches
    78 mm
    3-1/8 inches
    3.3 kg
    7 lbs. 5 oz.
Maximum height: 106 mm
, 4-3/16 inches (When the expression pedal is moved to the minimum).)
* 0 dBu = 0.775 Vrms
** AF (Adaptive Focus) method is a proprietary method from Roland
In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice.