The boss ev 30 expression control pedal is a compact yet powerful tool for professional expression control. Designed with a small footprint to fit perfectly on cramped pedalboards this pedal features a sturdy die cast aluminium chassis that ensures durability and reliability as expected from boss. A standout specification is its innovative internal mechanism which provides an ultra smooth feel and precise parameter control. Despite its compact size this pedal delivers a performance that rivals full size expression pedals. Thanks to its versatility the ev 30 is compatible with various boss pedals multi effects processors and effects switching systems. It can be used with ¼ inch trs expression inputs on stompbox pedals keyboards midi controllers and more. Additionally a handy polarity switch ensures compatibility with most devices that support expression. With its rugged space saving design and smooth pivot the ev 30 offers a silky feel and precise control over your parameters.