The Roland GR-500 and GS-500 are powerful and versatile guitar synthesizers that offer a wide range of features and capabilities for guitarists of all levels. Both units feature a built-in sound engine with a variety of high-quality sounds, including guitars, basses, synths, and drums. They also have a variety of effects, including reverb, delay, chorus, and distortion. The GR-500 and GS-500 also have a built-in sequencer, which allows you to create and record your own songs. Additionally, both units have a variety of connectivity options, including MIDI, USB, and S/PDIF.

The GR-500 is the flagship model in the Roland GR series. It features a number of advanced features that make it ideal for professional guitarists. These features include a 16-part multitimbral sound engine, a dedicated guitar synthesizer section, and a built-in expression pedal. The GR-500 also has a number of unique features, such as the "VariPhrase" function, which allows you to create and control complex pitch and time variations.

The GS-500 is a more affordable option that still offers a wide range of features and capabilities. It features a 12-part multitimbral sound engine, a dedicated guitar synthesizer section, and a built-in expression pedal. The GS-500 also has a number of unique features, such as the "Phrase Looper" function, which allows you to create and record loops of your own playing.

Both the Roland GR-500 and GS-500 are excellent choices for guitarists of all levels. They offer a wide range of features and capabilities, and they are both built to a high standard of quality. If you are looking for a powerful and versatile guitar synthesizer, the Roland GR-500 and GS-500 are both excellent options.

Roland GR-500 & GS-500 Service Manual