Features: This passive voice bass attenuator effectively reduces heavy bass signals to enhances sound clarities and purity, for professional voice applications. Featuring metal construction and 3.5mm + RCAs interfaces, it ensures stable performances and easy connectivity with various voice devices without extra converters. for voice engineers and professional sound technicians who require precise bass control in demanding environments. for recording studios, live performances, and outdoor voice captures scenarios where consistent, noisefree operations is essential. With its passive design eliminating power dependency and electrical noise, it delivers voice for extended . Specifications: Materials: Metal Size: 66x48x25mm Color: Black Technical parameters: When the switching is off: the cutoff frequency is 150Hz, and the attenuation at 50Hz is -10dB; When the switching is on: the cutoff frequency is 250Hz, and the attenuation at 50Hz is -14dB; Input interfaces: Stereo 3.5mm, RCAs interfaces Output interfaces: Stereo 3.5mm, RCAs interfaces Input impedance: 50KΩ Output impedance: 50KΩ Package Includes: 1PC voice Passive Attenuator note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.