2-Way Speaker Switcher Selector Box, 1-In-2-Out Amplifier A/B Switch, No Power N
2-IN-1-OUT Amplifier/Speaker Selector. Connect 1 amplifier to Speaker port and 2 speaker pairs to AMP 1/2 ports (1 amp → 2 speakers). Plug and Play: No power required. Enjoy pristine, unpowered switching that preserves your original sound quality.