Rtings.com finally did a full review of the Bose Soundbar 700 with surround speakers and bass module: https://www.rtings.com/soundbar/reviews/bose /soundbar-700-with-speakers-bass-module : r/bose
Expert review Bose 700 Soundbar + Bose Bass Module - Coolblue - anything for a smile
Bose Bass Module 700 - White | P.C. Richard & Son
Customer Reviews: Bose Bass Module 700 (White) at Crutchfield
Bose Bass Module 700 Wireless Home Theater Subwoofer | zZounds
Amazon.com: Bose Bass Module 500, Black & Surround Speakers 700, Black : Electronics