Roland GR-55S-BK

​Guitar Synthesizer - Over 900 of Roland’s latest fully editable PCM sounds, including pianos, organs, strings, vintage synths, and much more • Two types of multi-effects engines, plus global reverb, chorus, and delay effects, and an onboard looper • Color: Black 


• Up to four sound sources at a time: two PCM synth tones, plus COSM guitar modeling and normal guitar input. 
• Built-in USB audio player with foot control. 

Specifications 

Sound Generator 
PCM: 2 tones 
Modeling: 1 tone 

Tones 
PCM: 910 types 
Modeling: 23 types (guitar mode), 17 types (bass mode) 

Effects 
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: 24-bit 

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 

Connectors 
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 

Accessories 
AC adaptor 
Owner's manual 


Options (sold separately) 
Divided pickup (GK-3) 
GK cable (5 m) 
GKC-10 (10 m) 
MIDI foot controller: FC-300 
Unit selector: US-20 

Size and Weight 
Width (W)405 mm Depth (D)244 mm Height (H)78 mm 
Weight 3.3 kg7 lbs. 5 oz. 

** AF (Adaptive Focus) method is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters.