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 groundbreaking new era in guitar synthesis! Specidfications Sound Generator: PCM: 2 tones Modeling: 1 tone PCM Tones: 910 types Modeling Tones: Guitar mode: 23 types Bass mode: 17 types 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 Display: Graphic LCD 240 x 64 dots 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) Power Supply: DC 9 V Current Draw: 700 mA Accessories: AC adaptor (PSB-1U + AC Cord Set) 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 AC adaptor (PSB-1U) Size and Weight: Width: 405 mm (16 inches) Depth: 244 mm (9-5/8 inches) Height: 78 mm (3-1/8 inches) Weight: 3.3 kg (7 lbs. 5 oz.)