ADL was founded in 1986 by Anthony DeMaria. ADL, a boutique industry that designs and manufactures vacuum tube equipment for the music industry. ADL is truly unique for its owner’s commitment to his clients. Anthony has been handcrafting and rigorously testing his own products for the past 29 years, resulting in a stellar reputation world wide. If you’re considering upgrading to recording quality sound and craving personal one-on-one attention, look no further than ADL.