The used Roland GR-33 Guitar Synthesizer Effect Processor is a powerful tool for guitarists looking to expand their sound. In good condition, this unit delivers a wide range of synthesized tones and effects with responsive tracking. It features 384 built-in sounds, including pianos, strings, and synth pads, with real-time control via an expression pedal. Designed for use with a GK-compatible pickup, it offers MIDI output for further expansion and deep sound customization. Onboard effects processing includes reverb, delay, and modulation, making it a versatile addition to any guitarist's setup. The intuitive interface allows for easy patch selection and editing, while its rugged design ensures durability for live performance or studio use. Whether creating ambient textures or lead synth lines, the GR-33 provides expressive performance capabilities. Tested and fully functional, this unit is a great choice for musicians seeking high-quality synthesized sounds at an affordable price.