Fix one failure of a familiar product, then widen slowly

Who it’s for

Someone with a hands-on craft or engineering skill who wants to test a physical product niche before quitting a job.

The lesson

KLOS began with one product that answered one complaint: a travel guitar that does not crack in the cold or cost $1,500 or more. It made only that guitar for about three years before adding other instruments. The lesson is to solve one named failure for one group of buyers and prove it before widening the range.