 Currently, the use of turret boards is limited to hand-wired vacuum tube electronics (be it commercial or hobby), often as an attempt to replicate a classic design or design approach.Popular "DIY" (Do-It-Yourself) components utilizing this approach include reproduction vintage guitar amplifiers and certain professional studio components from the 1960s, such as the classic and still widely used Teletronix LA2A tube compressor.In general, however, due to the expense and time-consuming nature of turret board construction methods, experimental or test-stage electronics projects generally make use of one of the many types of perfboard available, while final circuits—both hobby and commercial—utilize printed circuit boards.