The Melody OD provides excellent overdrive characteristics and includes a 6 band graphic EQ with 18 db cut and boost on each frequency making it perfect for all styles! The Mark Lettieri signature drive gives you a smooth overdrive capable of jazz to rock tones. Mark needs versatility so not only does the Melody OD provide excellent overdrive characteristics it includes a 6 band graphic EQ with 18 db cut and boost on each frequency. This feature allows for solo boosts or to help a struggling backline setup. Dimensions: 4.00″ x 2.30″. 9 volt Negative tip adapter and a 5.5mm x 2.1mm jack. True Bypass Switching.