Shop › Boss VT-1 (Vintage) Image 1 of 2 Image 2 of 2 Boss VT-1 (Vintage) $275.00 sold out 90s Boss Vocal Transformer VT-1.In nice shape, comes with 9v power supply. Local pickup or US shipping available Get notified by email when this product is in stock. Sold Out Added! 90s Boss Vocal Transformer VT-1.In nice shape, comes with 9v power supply. Local pickup or US shipping available