This is a 10-input combiner (mixer/collector) for the Taishogoto. Product Description: Inputs: 10 mini jacks, Outputs: 1 standard jack, 1 Cannon, Uses 6 size D batteries, Size: Approximately 15 x 20 cm Connects up to 10 Taishogoto instruments to an amplifier. There are some scratches and dirt, but the operation is not a problem. Please refrain from purchasing if you are nervous about used items.