Brand new in sealed package. For this reason it is untested. Purchase as is. 

Looking for a powerful car amplifier? Check out this Roadmaster Equalizer Amp EA400N II. With a power output of 100W, this amplifier can keep up with even the loudest of car audio systems. Made in China, this amplifier is built to last and deliver high quality sound for all your vehicle electronics needs. Perfect for any car audio enthusiast or anyone looking to upgrade their current system.