number-of-knobs:20 ✕ has-loop-button-function:yes ✕ headphone-sockets:2 ✕ outputs:4 ✕ width:600-mm ✕ inputs:6 ✕

Allow OR queries (select multiple values per filter)

When disabled: selecting a filter value replaces the current value.
When enabled: you can select multiple values for the same filter (OR logic).