The Ocean Audio 500 EQ is a 4-band sweepable EQ for the 500 series, designed by Malcolm Toft. Its 4 bands have overlapping frequencies chosen for a musical equalization, and can provide up to 15dB of boost or attenuation. Each boost/cut knob has a detent to indicate unity. The 500 EQ's high and low frequency bands can be assigned as peak or shelving EQs, depending on the application. The module has balanced input and output and is handmade in England.
Note! This module requires a 500 series power supply for operation.