Circuit Board upgrade - Kickstarter units

Ship your unit to us and we'll upgrade your Kickstarter PCB. Upgraded features include:

-stronger rumble response for passive basses.

-higher frequency response range.

-ability to rumble the Aux input.

-aux input stereo mapping to headphone output.

Shipping address is:

BackBeat Technologies LLC

168 Pickford St

Novi MI 48377

US