The FHX-8CV is an expander for the FH-2 that adds eight CV outputs. Up to seven FHX-8CVs can be connected to one FH-2 for a total number of 64 CV outputs. The FHX-8CV is also compatible with the FH-1. The FHX-8CV replaces the FHX-1. The FHX-8CV voltage range can be set from software via the FH-2.