Pioneer SF-70 (made in Japan vintage electronic crossover network, 1969-1972). Supports 3-way/2-way configurations with adjustable crossover frequencies (125Hz to 8kHz) and selectable slopes (6/12/18dB/oct). This rare model precisely divides high, mid, and low frequencies, making it ideal for a full-fledged speaker system. Output confirmed from all HIGH, MID, and LOW outputs. Operation has been confirmed, but there is some crackling. Other than the crackling, it functions without any particular problems. I think the exterior is in good condition for its age (subjective). Please check the details in the photos. No accessories included. This is a sale of the item as is, with the main unit only. Due to being a used vintage item, no claims or returns are accepted, and it is offered on the assumption of needing repair. Immediate purchase is OK, and questions are welcome!