【Built-in 2ch auditory Isolator】It can help you reduce the noise of your car and home auditory electrical device and provide you with highly auditory 【Multi-scenario Use】auditory Noise Canceller can be used with amplifiers, loudspeakers or mixer with stable, high accuracy and reliability 【Easy Installation】This auditory isolation is, not need for any complicated tools, and it can be used after correctly connecting the 6.35 1 / 4inch 【Durability Metal Design】Strong anti interferences ability, suitable for long-time use [ Portable Sound Canceller] Suitable for auditory equipment, it can isolate ground interferences and filter noise from different auditory