High power, rugged and durable passive DI High performance custom wound former -15dB attenuation, allowing ultra-high level output from devices such as CD players and headphones enter Ground switch eliminates the "hum" sound in the ground loop Connect consumer audio products with professional audio equipment Ultra-sturdy design, extended service life Plug and play, easy to operate Completely passive design, no power supply required Input and pass-through plugs to connect inst ents to inst ent amplifiers XLR balanced 600Q microphone level output up to 1000 feet away with no noticeable noise Technical specifications: Channel: dual channel Channel type: 2 mono channels or make up a stereo Type: High performance passive DI Power supply method: plug and play Frequency response: 20Hz~20KHz(0.2dB) Dynamic range: 128 dB Total harmonic distortion: 0.01% from 20Hz~20kHz @-10dB Input impedance: 140k ohms, unbalanced Output impedance: 150~600 ohms, balanced Input board, 180° polarity reversal, ground lift Input connector: 6.5 1/4inch Output connector: XLR, 1/4inch straight through Dimensions (length x width x height): (105mm x 90mm x45mm) Condition: Only suitable for dry places between 5°C and 40°C Colour:black Material:Metal Package Contents: 1 x Passive Audio DI Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.