The videos are useless IMO. I haven't heard akra, but I love Eisenmann. And that probably means I won't like Akra.
Eisenmann sounds like a German Muscle Car. Deep exotic rumble of thunder. The sound of a car that is ready to kill someone. Its beasty.
2014 Porsche 911 Turbo S
2015 Mercedes-Benz C300 Sport 4MATIC