Detail 01
Three sound engines
Two PCM engines and one COSM modeling engine can be used together with the guitar’s normal input.

Independent shopping perspective
Roland’s black GR-55 is a guitar synthesizer built around two PCM sound engines and a third COSM modeling engine. It can combine those engines with your guitar’s regular signal, then shape the result with its effects, global reverb, chorus, delay, and EQ. Presets, category buttons, the LCD, and EZ Edit/Sound Style functions keep sound selection and editing on the front panel. The included GK-3 Divided Pickup provides the required GK-compatible connection for accessing its sound palette.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Two PCM engines and one COSM modeling engine can be used together with the guitar’s normal input.
Detail 02
The two PCM engines provide pianos, organs, strings, synthesizers, percussion, and more.
Detail 03
The rear USB connection supports computer audio/MIDI use and USB flash-memory WAV playback.
Detail 04
Listed product weight is 7.28.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Yes. It is supplied with Roland’s GK-3 Divided Pickup.
Yes. Its rear USB 2.0 connection lets it function as an audio/MIDI interface for computer recording and MIDI triggering.
Yes. The GR-55 can combine the three sound engines with the guitar’s normal input.
Yes. It plays WAV files from USB flash memory, with playback controlled by the onboard pedals.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.