Accutronics 9AB3C1B Reverb Tank New Production Accutronics 9AB3C1B Spring Reverb Tank Long (16 3/4") 3 Spring Unit, Long Decay Input Impedance 10 Ohms, Output Impedance 2575 Ohms Mounting: Horizontal Open Side Down. Connectors: Input Insulated/Output Grounded Made In South Korea