i think the EQ is cool , but it could use a tweak to mkae it easy to use while driving and maybe even looking a bit cooler in the process. Im gonna think about it for a while to make a proper suggestion :)

as for the volume i think that it
Depends - maybe there should be a setting at some point to control the volume increase speed only because its a matter of taste how fast volume increases or decreases. Thats why some people perfer a Volume know even on high end Heead units because you can turn the volume off immediately if need be (cell phone , car noise that worries you , actually listen to someone sitting next to you nagging you)

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