Extremely lightweight 19” 1U rack-mount tuner for guitar or bass guitar that features improved, large ‘3D’ visual meter for unprecedented visibility, and slim construction that is not limited to rack installation. It provides three meter display modes: Regular, Strobe, and Half Strobe; Mute function for silent tuning; and Cable Checker function that warns of broken or shorted cables. Tuner is equipped with a variety of connectors: standard input 1 for guitar/bass, ‘Mute’ input and ‘Cable Check’ input on the front side (all mono 1/4" jacks); and standard input 2 (mono 1/4" jack) on the rear side, intended to use with the line output from an effect unit or keyboard. Tuner is powered by DC 9 V, AC adapter (included). 2 rack mounting adapters, 4 washers and 4 screws are included. Dimensions (tuner only): 430 x 49 x 44 mm. Dimensions (when used with the rack mounting adapters): 482 x 49 x 44 mm. Weight (tuner only): 363 g.