Can't be used as an effect pedal between guitar and amplifier, This is a part of the internal circuit of the amplifier. Please check the parameters before purchase to confirm whether this reverberation box matches your own amp. Feature: Input Impedance: 600 Ohm Inductance: 125MH ±10% DC Resistance: 75 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 Dimension: 23.5 x 8.7 x 3.5 cm Package Included: 1 x Spring Reverb Tank.