Features: Multiple way switching: Supports 2 in and 8 out, achieve multiple speaker switching and distribution, allowing users to easily choose different speaker outputs. Without destructive sound quality: Adopting a passive power amplifiers design, ensuring without loss signal during transmission and providing quality sound experience. Quality: Equipped with a build-in comparator, it ensures that sound quality during signal conversion and distributions. Simple operae: The device is easy to operate and not require external power. Widely applicable: suitable for home, small commercial place, convenient and fast installation and use. Specifications: Color: Black Size: about 335x65x45mm/13.19x2.56x1.77inch Product model: B028 Channel power: Each channel supports UP TO300W Output channel: Supports 8 pair of passive speaker outputs Switching: use 2-gear self-locking mechanical button switching Frequency response: 10Hz-50KHz Output impedance: 4-16Ω Package Includes: 1x 2 in 8 out Amplifiers Speaker Switcher note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.