Seismic Audio - Pair of Passive Direct Box w/Ground Left and Attenuator Switch DI Box Model Number: SA-DI1 (Pair) - Construction: Solid Steel - Dimensions: 4.75" x 3" x 1.75" Attenuator Switch: 0db, -20 db, -40db Instrument Input: 50K unbalanced TS jack - Parallel (Link) Out: 50K unbalanced TS jack Balanced Output: 600 ohm Balanced XLR Jack - Ground Left: Switchable Ground Lift Recommended Uses Included: Live Sound, Permanent Installations, Clubs, Church, Practice, and PA, Monitor, Karaoke, or DJ Systems