21General information or Technical AssistanceFor more information on JBL products, including these power amplifiers, contact yournearest JBL professional products dealer or the JBL factory at the address below.RepairsPlease do not ship your amplifier(s) to JBL or a JBL authorized repair facility withoutprior authorization. You may obtain that authorization by contacting the factory orrepair facility directly. Please ship amplifiers in original packing materials or equiva-lent to prevent further damage during shipment, and insure the shipment adequately.Mark the return materials authorization number (RMA) clearly on the outside of thepackage and on any correspondence.JBL Incorporated8500 Balboa BoulevardNorthridge, California 91329 USATelephone (818) 893-8411For Further Assistance