Roland GR-55S-BK GUITAR SYNTHESIZER
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- This item is covered for 3 years
What you need to know
What you need to know
- 4 parallel sound sources: 2 PCM synths + COSM modeling + direct sound from your guitar for massive and ultra-creative layering.
- Very fast tracking: pitch detection and optimized response to follow your playing precisely, even with sharp attacks.
- Huge ready-to-play library: over 900 PCM sounds, practical categories, and hundreds of memories to switch from one universe to another in a second.
- True rig centerpiece: multi-effects, amp/drive, built-in looper, MIDI and USB audio/MIDI, plus USB audio player controllable by foot.
Manufacturer Information
Roland
https://www.roland.com
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Roland Central Europe N.V.
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A "game changer" from Roland: the meeting of guitar synth and COSM modeling
The GR-55 marks an important milestone in Roland's guitar synth family: it combines two PCM generators (for synth sounds) and COSM modeling (guitars, basses, amps, and synth-like textures) in one machine designed for the stage. The idea is simple: instead of choosing between "guitar sound" and "synth sound," you combine them, layer them, and create tones impossible to achieve with a classic pedal.
For whom, for which styles, and in what contexts?
This multi-effects unit is aimed at guitarists (and bassists in dedicated mode) who want to expand their sonic vocabulary without multiplying devices: rock riffs boosted by synth layering, ambient pads under a clean arpeggio, ultra-dense metal leads, or "piano/organ/strings" sounds to thicken a band arrangement. Live, the GR-55 shines with its patch memories and quick access by categories; in the studio, it becomes an immediate source of inspiration to lay down production ideas, double a line, or create an unusual hook.
Technical specifications
| Effects | Reverb, Delay, Multi-effects, Looper / Sampler, EQ, Chorus, Preamp, Modeling Processor | Type | sector |
| Format | Pedalboard | Use | electric guitar |
| EQ | Yes | Color | Black |
| PCM | 2 tones | USB Memory Audio Player | WAV, AIFF |
| Modeling | 1 sound | Nominal output level | OUTPUT -10 dBu |
| MFX (Multi-Effects) | 20 types | Output impedance | OUTPUT 2 k ohms |
| AMP (Preamp) | 42 types | Display | 240 x 64-dot graphic LCD |
| MOD (Modulation) | 14 types | GK IN | 13-pin DIN |
| DELAY | 7 types | GUITAR OUT | 6.35 mm jack |
| REVERB | 5 types | OUTPUT L/MONO, R | 6.35 mm jack |
| CHORUS | 4 types | PHONES | stereo, 6.35 mm jack |
| Guitar mode | Preset 270 + User 297 | MIDI IN, MIDI OUT | 5-pin DIN |
| Bass mode | Preset 90 + User 297 | USB COMPUTER | Hi-Speed USB, USB MIDI and USB Audio |
| AD Conversion | 24-bit (GK pickup) | USB MEMORY | compatible with high-speed USB flash memory |
| DA Conversion | 24-bit | Power input | DC |
| Sampling Frequency | 44.1 kHz | ||
Customer reviews
Based on 2 reviews
- 5 stars, 1 review
- 4 stars, 0 reviews
- 3 stars, 0 reviews
- 2 stars, 0 reviews
- 1 star, 1 review
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A real pleasure to work with the sounds and to organize them “by my hand”.
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No instructions for use in French: it's illegal.
No connection system provided: it is therefore a scam.
Thanks woodbrass!Automatically translated
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Questions frequently asked
Does the Roland GR-55S-BK work without a GK pickup?
This version is supplied without a GK pickup. The GK input uses a 13-pin DIN connector, necessary to utilize the 2 PCM sound engines and COSM modeling.
Can the GR-55 be used with a bass guitar?
A dedicated bass mode includes 90 preset patches and 297 user locations. The guitar mode offers 270 preset patches plus 297 user memories.
What sounds and effects are available on this guitar synth?
Two PCM tones can be layered with a COSM modeling sound and the instrument's direct signal. The effects section includes 20 types of MFX, 42 amplifiers, 14 modulations, 7 delays, and 5 reverbs. Four types of chorus and a looper complete the architecture.
What audio and MIDI connectivity is available?
L/MONO and R outputs, a dedicated guitar output, and a headphone output are all 6.35 mm jack format. MIDI In/Out ports on 5-pin DIN and a USB Computer port compatible with audio and MIDI are built in.
Can the GR-55 play audio files from a USB stick?
The USB Memory player supports WAV and AIFF files from a high-speed USB flash drive, with foot control operation.



