Passive Preamplifier Active Speaker Volume Controller: precise volume adjustment, no loss, compatible with all types of playback devices and external active speakers.
Professional 128mm Fader Switch for Volume Adjustment: the accuracy error of fader switch is small, the left and right channels are synchronized better, and there is no loss of sound details.
Compact & Exquisite Size: the volume adjuster with intuitive scale designed makes the desktop volume adjustment more convenient and precise.
Plug and Play, Simple Installation: able to be used once inserted, convenient to install, signal source non consumption adjustment, no loss of input and output, perfect for you to enjoy different hearing experience.
Suitable for Equipment with Excessive Sound Gain: such as computer sound card, DAC decoder, CD player, digital player, active speaker, rear power amplifier and other equipment.