This switch box will allow two pairs of stereo speakers to be connected to the output of a stereo amplifier. The pairs of speakers can be selected individually or both together. Internal Protection Impedance Protection.
eBay
LYNEPAUAIO 2 in 4 Out Speaker Selector Switch Box 4 Zone Amplifier Speaker Selector Volume Control
Aliexpress UK
This 2-way Speaker Selector Switch box from E-Audio is for use with two pairs of speakers. Impedance switching built into the unit ensures the minimum impedance seen by the amp is 4 Ohm (if using 8 Ohm speakers), no matter how many of the pairs of speakers are switched on.
eBay
2 in 4 Out Speaker Selector Switch Box 4 Zone Amplifier and Speaker Selector with Volume Control
Aliexpress UK
For use w/ 8ohm impedance speakers. I bought this item from Amazon in January 2022. I am upgrading this setup to two new switch boxes that allow for two amplifiers to connect to each box.
eBay
USB Volume Control Knob Multimedia PC Computer Speaker Volume Controller Knob Support One-key Mute
Aliexpress UK
This speaker selector box allows you to play audio to up to six different stereo speaker sets. It easily handles up to 100 watts per channel with speaker systems that have a minimum impedance of 8 ohms.
eBay
USB Volume Control Knob PC Computer Speaker Audio Volume Controller 2 Modes Multimedia Controller
Aliexpress UK
This switch box will allow two pairs of stereo speakers to be connected to the output of a stereo amplifier. The pairs of speakers can be selected individually or both together. Durable rotary switch.
eBay
Computer Speaker Compact and Delicate Laptop Speakers with Volume Control and 3.5 Mm Audio Plug,
Aliexpress UK
This matrix switcher for stereo amplifiers has 2 inputs and 4 outputs. Accepts up to 14 gauge speaker cable. Individual A/B switch per zone. Inputs : - 2 x stereo. Outputs : - 4 x stereo @ 4 to 16 ohms.
eBay
Computer Speaker Compact and Delicate Laptop Speakers with Volume Control and 3.5 Mm Audio Plug,
Aliexpress UK
This matrix switcher for stereo amplifiers has 2 inputs and 4 outputs. Accepts up to 14 gauge speaker cable. Individual A/B switch per zone. Enables four pairs of speakers to be connected to two separate amplifiers.
eBay
Computer Speaker - Compact and Delicate Laptop Speakers with Volume Control and 3.5 Mm Audio Plug,
Aliexpress UK
1 piece 4 input 2 output power and sound switcher loudspeaker switch distributor. s push-button select switch input,2 sets of stereo speakers push-button select switch output (2 sets of speakers can be opened or closed independently).
eBay
Durable Car Speaker Amplifier Bass RCA Level Remote Volume Control Knob LC-1 Universal Amplifier
Aliexpress UK