Audio & VisualAudio and VisualReviewsSpeakers & HeadsetsI-Venstar S400 and S406 Bluetooth Speaker Round UpChris22 August 201526 October 2017 by Chris22 August 201526 October 201701535 Today we will be taking a look at I-Venstar’s S400 and S406 Bluetooth speakers. I will be honest I never really had a need for...