BOSS GM-800 Guitar Synthesizer PedalNext generation guitar and bass synthesizer with the newly developed Serial GK interface Advanced ZEN Core sound engine derived from flagship Roland synthesizers Natural playing feel and solid tracking stability, realized through high performance DSP Powerful Scene workflow with four Tones plus Rhythm Vast onboard sound library with over 1200 Tones and 70 Rhythm sounds Explore Sound Packs, Wave Expansions, legendary Roland instruments, and more on