If you like this video, please give me a thumbs up. preview/ 0:00 SR3D/ 8:52 3Dio/ 28:54 Headrec/ 48:55 Silicone Ear_1/ 1:08:56 Silicone Ear_2/ 1:28:57 Silicone Ear mini/ 1:48:59 Duopop/ 2:09:00 Dummy Head/ 2:29:01 3Dio_Behind the Ear/2:49:02