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 BMW ///M5 Individual Frozen Grey, Silverstone Full Merino, Piano Black, Exec Pkg, Drivers assistance plus, LED Pkg, Bang and Olufsen, 20" 343M Forged Alloy Wheels
Countermeasures: Bel StiR+, Laser Interceptor Quad HP, Zaon MRX
Upgrades: Eisenmann Sport with M Performance Carbon tips, Dinan anti-roll bars
2015 Jaguar F-Type R Coupe