Features:
Support 1 set of power amplifier stereo input, 1 set of speakers stereo output.
Easily control the volume of the left/right sound channel of the passive sound box separately.
Each channel supports up to 150 watts output.
All metal constrution, well-made, and sturdy for long term use.
Easy to install, no external power supply required, plug and play.

Specifications:
Material: Metal
Color: Black
Frequency Response: 10Hz~50Hz
Output Impedance: 4~16 ohm
Speaker Cable Size: maximum 14 AWG
Item Size: 15*6.8*5.5cm / 5.9*2.67*2.16in
Item Weight: 700g / 24.69oz
Package Size: 18.5*13.5*6.5cm / 7.28*5.31*2.55in
Package Weight: 800g / 28.21oz

Packing List:
1 * Volume Control Box