Try contacting them via Customer Support: Vacuum Tube Logic, 4774 Murietta Street, Suite 10, Chino, CA 91710. Tel: (909) 627-5944. Fax: (909) 627-6988. E-mail: mail@vtl.com. Internet: http://www.vtl.com/
Good luck and and Happy Listening!
Good luck and and Happy Listening!