Features: 【Built-in 2ch auditory Isolator】It can help you reduce the noise of your car and home auditory electrical system and provide you with high-quality auditory output 【Durability Metal Design】Strong anti interferences ability, suitable for long-time use 【Easy Installation】This auditory isolation is easy to install, no need for any complicated tools, and it can be used after correctly connecting the 6.35 1/4inch . 【Multi-scenario Use】auditory Noise Canceller can be used with amplifiers, loudspeakers or mixer with stable performances, high accuracy and reliability. [Portable Sound Canceller] Suitable for auditory equipment, it can isolate ground interferences and filter noise from different auditory systems. Specifications: Material: ABS+Metal Size: about 13x9x4cm/5.12x3.54x1.57in Color: black Input Impedance:600Q Output Impedance:600Q Input Connectors：6.35 Mode:Passive Main Functions:Physical isolation of 2CH, balanced/unbalanced interconversion Frequency Response:20Hz-25kHz (<0.3dB ref 1kHz) Insulation resistance:DC1000V 100MQ Isolation voltages:AC50Hz-60Hz0V-1500V Package Includes: 1PC Auditory Isolator note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution