Used in a lounge with a smartphone android; Bluetooth connection is done very quickly and never plant. The range is up to 5 meters no problem moving with mobile in the pocket, and up to ten meters if left motionless smartphone. The input jack and USB input also works well. By asking the two speakers on all sub takes up very little space but is sufficient power question. You can push the volume almost bottomless as low sizzles in calling it strong in a room of 20sqm. After it is not a sound either.