FEATURE 11 adjustable modes - dual-channel input 19 adjustable colors - 128 LED beads in 2 rows 6 levels of adjustable brightness 5 levels of adjustable speed Bass/midrange/treble adjustment Supports manual single-knob control Voice-controlled audio switching High-speed sampling Intelligent noise elimination Independent gain adjustment RCA interface and 3.5mm earphone jack 1.5U rack mount Full-metal casing SPECIFICATION Material: metal, acrylic Power Supply: AC100-240V Max. Current: 0.5A Frequency Response: 50Hz-18KHz Pickup Sensitivity: >-40dB (94dB SPL @1KHz) Input Impedance: 20kOhm Size: 18.9” x 2.3” x 1.9” Weight: 2.2LBS PACKAGE -1 x 1.5U VU Meter -1 x Audio Cable -1 x Power Cord -1 x Instructions