When installing mobile audio systems, you will need a good solid line of 12 volt interface products. Many adapters are available to meet your specific vehicle needs. High to low converters, bass blockers and bluetooth adapters are just a few of the OEM interface products PAC manufactures. Add amplifiers and aftermarket speakers to a factory head unit or match a aftermarket head unit with factory amplifier and speaker system. Wholesale audio club is your source for finding Wholesale Pac Distributors!