Haha, Cheers Linas 😀. My IS drowned whilst at work...thankfully i'm situated on higher ground and refuse to park in that section of road anymore, just in case !!
I find its more the depth. To my ears you can get the bass, middle and treble adjusted fine, but it still sounds kind of flat to me. Ironically i thought the sound was slightly better on my Premium Nav spec'd IS, which is a little disappointing having heard so many people rave about the ML system.
Funnily, i considered adjusting the balance L/R to try and feel more depth, but i must be