Final answer:
Joe Luftwak and Kyle Wolf founded Blackbird and implemented quality controls to ensure their guitars met high standards. These controls specify materials, production processes, and testing.
Step-by-step explanation:
When Joe Luftwak and Kyle Wolf founded Blackbird in San Francisco in 2005 and established a set of parameters for how the guitars were to be produced, they implemented a type of control known as quality controls. These controls are essential to ensure that every product meets a certain standard of excellence and consistency. Quality control measures can include specifications for materials, production processes, and end-product testing to maintain the high standards set by the company.