Input Impedance: 600 Ohm Inductance: 23.0 MH ±10% DC Resistance: 28.0 Ohms ±10% Recommended AC Drive:3.1 MA For Approx. 3.5 AT Output Impedance: 2250 Ohm Inductance: 330.0 MH ±10% DC Resistance: 220.0 Ohms ±10% Decay Time: Medium 1.75 ~ 3.0 SEC Connectors: Input Insulated, Output Grounded Locking device: No Lock Mounting Plane: Horizontal Open Side Down Package Included: 1 piece Spring Reverb Tank.