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The SoundTouch® SA-5 amplifier works with the following Bose® indoor and outdoor speakers, as well as most other speakers. It can operate up to two pairs of speakers in parallel if you want to provide music to two rooms or power four speakers in a larger space. All attached speakers will work together as one SoundTouch® “zone”.

Indoor speakersCan operate one pair with SA-5Can operate two pairs with SA-5 (in parallel)
161 speakers YesYes
201® speakers YesYes
301® speakers YesNo
Acoustimass® 3 stereo systemYesNo
Acoustimass® 5 stereo systemYesYes
591® in-ceiling speakersYesYes
691® in-wall speakersYesYes
791® in-ceiling speakersYesYes
891® in-wall speakersYesYes
Outdoor speakersCan operate one pair with SA-5Can operate two pairs with SA-5 (in parallel)
Free Space® 51 speakersYesYes
151® SE speakersYesNo
251® speakersYesYes