BEHRINGER VP1 Vintage Phaser This model is a homage to the classic 70s Electro-Harmonix Small Stone, used on guitars, electric pianos, and more. It offers a wider range of effects than the original, has analog warmth, and is conveniently powered by a standard 9V center-negative adapter. Fully functional. Shipping included. Please note that this is a used item, so please refrain from purchasing if you are overly concerned about minor scratches or imperfections. - Model: VP1 - Brand: BEHRINGER - Type: Phaser - Power: 9V - Output Terminals: OUTPUT - Input Terminals: INPUT Thank you for viewing.