width:464-mm ✕ number-of-knobs:21 ✕ weight:2-13-kg ✕ has-loop-button-function:yes ✕ inputs:1 ✕ headphone-sockets:2 ✕

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).