Amongst the more aggressive Rat circuits out there, this is maybe one of the best until now. there are contenders, like the Drunken Beaver Tephra, which enters Life Pedal territory. There is the JHS Ratpack, sure. they provide versatility. This one provides the sheer brutality of the white-face / Turbo-Rat i like so much in proven Lichtlaerm quity. Noiseless, power-conditioned. I'd sell them if small shops would be still viable today.