Accutronics 8AB2A1B Reverb Tank New Production Accutronics 8AB2A1B Spring Reverb Tank Short (9 1/4") 3 Spring Unit, Medium Decay Input Impedance 10 Ohms, Output Impedance 2575 Ohms Mounting: Horizontal Open Side Down. Connectors: Input Grounded/Output Grounded Made In South Korea