IGS Audio / RB 500

A single-channel Pultec-style EQ module with an attractive clean feel.

The Rubber Bands500 is a passive equalizer made by IGS Audio for the 500 series single track, with a lot of know-how in unique EQs.

This little module features input and output transformer balancing (Carnhill) and a discrete driver circuit. Of course, the entire filtering section is passive, reflecting the analog equalizers of the 60s. There are separate frequency selectors for the boost/cut sections for both low and high, and you get a true bypass switch.