MAKE YOUR AXE TALK, SING, AND CRY. https://www.boss.info/global/products/vo-1/ The VO-1 Vocoder provides both traditional vocoder sounds and new capabilities that go beyond past vocoders. Vintage mode produces the classic “synth voice” sounds heard on pop and electronic music records through the years. Advanced mode takes things a step further, delivering new vocoder tones with enhanced clarity. Talk Box mode lets you achieve “talking” lead guitar tones without a complicated (and messy) talk box