Partner with another company to promote both businesses
It would be ideal to promote with another company that also focuses on the head... say, Sportclips. You could station employees at a specific location to promote your product while Sportclips can advertise that Klipsch is going to be there to market their products. Ideally, you could play music, or Sportclips television audio, through one of your devices. You and Sportclips could cross promote by offering discounts (bring in Sportclips receipt for 10% off Klipsch product / bring in Klipsch Audio receipt, box, item, for 15% off haircut, etc...). Stylists from Sportclips could also accompany Klipsch to marketing events offering on-site discounted haircuts (possibly even providing haircuts or haircut coupons at Klipsch Music Center).