This option provides a separate enclosure with line level effects send and return jacks for adding the effects device of your choice to the SSP-3A. Compatible with the following models only when used with the SSP-3A: A, AB, B, BA, C, AV, BV, CV, A-100, BC, D, G, BCV, DV, B-2, C-2, B-3, C-3, D-152, RT, RT-2, RT-3.
NOTE: (1) The Effects Loop I/O box functions only with the SSP-3A. (2) Line Level effects devices are typically rack mounted and are designed to accept a higher signal level than instrument level effects devices. (3) Instrument Level effects devices include guitar pedals and other effects devices intended to be placed between an instrument and amplifier.