Image Dynamics USA ID V4 Series Owner's Manual page 2

∆ Caution ∆
High powered audio systems in a vehicle are capable of generating
higher than "Live Concert" levels of sound pressure. Continued ex-
posure to excessively high volume sound levels could cause hearing
loss or damage. Also, operation of a motor vehicle while listening to
audio equipment at high volume levels may impair your ability to hear
external sounds such as horns, warning signals, or emergency vehicles—
thus creating a potential traffic hazard. In the interest of safety,
Image Dynamics USA highly recommends listening at lower volume levels
when driving.