Features 1、Multifunctional: This sound attenuator is multifunctional and does not require power supply, it can reduce the signal to a suitable size, so that you can input some voice devices to the sound card or stereo on the microphone connector, so that they can produce a reverberation effect, suitable for some friends who play music for live video recording and so on. 2、Good Performance: This passive attenuator has a 6.5mm mono large 2 core, 3.5mm stereo socket, you can use either or both ports at the same time, which is very practical for connecting a variety of devices. 3、Sturdy And Robust: This sound passive attenuator is made of excellent aluminium alloy material, which is sturdy and abrasion resistant, not easy to be damaged, and has a long service life. 4、Compact And Lightweight: This passive line level attenuator is small in size and light in weight, which makes it very convenient to carry and use, and can be used in a variety of situations. 5、Wide Application: This sound volume control attenuator has a wide range of applications and can be used in sound conference room, studio, recording studio, TV station and so on. Specification Item Type: Sound Passive Attenuator Model: LM-40 Material: Aluminum Alloy Attenuation Range: Approx. -40db--15db Input Port: 6.5mm Mono Big Dual Core, 3.5mm Stereo Socket (Can use one or both ports simultaneously) Output Port: 6.5mm Mono Big Dual Core, 3.5mm Stereo Socket (Mixed to mono signal, can use one or both ports simultaneously) Package List 1 x Sound Passive Attenuator 1 x 3.5mm Male to Male Cable