Please read my review on the Soundbar 700 for more details, but heres a copy/paste of what I said about this AMAZING sub-woofer:About the sound module. I found that by laying the rack assembly upside down on the box it was shipped in and assembling the trays one side at a time made handling it myself much easier. These things are supposed to be removable, right? My wife put it on backwards and we tried to reposition it and it broke the top off of her ear buds! The sound is far better than the silicon ear tips that came with the earphones and the isolation is superb. Give it a try, I was really impressed, head and shoulders has upped their game. Very comfortable and I like the style. On the bottom of the shoe it has a number. What I like about this airpod case is that it fits perfectly for my airpods. The tire is the key in regard to noise. Being a northerner, there are 4 distinct seasons including bulky winter coats and the heaviest garments.