Well I had the level IV put in my SGS in Sturgis this year and did the Moto 4 as well after reading all the info on here. I dealt mainly with Sue who was very nice and helpful. I only I say that lightly only had the 2 fairing speakers put in this year and will do the lids next year all I can say is it ROCKS! How do I know this well I was sitting in traffic today listening to Motley Crue from the flash drive they gave me and I was just jammin light turned green and I went got a 1/4 mile or so and saw lights I. My rear view mirror yep a LEO so I pulled over and he asked me if I knew why he pulled me over well I played dumb and said no he then told me he was at least 15 cars behind me and that he could hear the music as if he had it on his stereo he even knew the name of the song. I told him I didn't even have it half way up he then explained with it that loud I wouldn't be able to hear an emergency vehicle approaching from behind . He admired my bike and let me go with a warning to keep it down. I knew it was loud but wow so if anyone is thinking about using Soundz I would definitely go for and spend the extra to get a great system again only 2 speakers ! Lord help me when I get 4 !!'