DiyMobileAudio.com Car Stereo Forum banner

stephen mantz

  1. Stephen Mantz, Zed Audio, ESX Quantum, Kronos, Leviathan

    Technical & Advanced Car Audio Discussion
    I have not been following mobile audio for a number of years, but I remember that the ESX Quantum amps from years back were one of the best amplifiers a person could buy, especially for the money. I have been reminded of them recently and have some questions. Is it correct that they were...

  2. Stephen Mantz, Zed Audio, ESX Quantum, Kronos, Leviathan

    Technical & Advanced Car Audio Discussion
    I have not been following mobile audio for a number of years, but I remember that the ESX Quantum amps from years back were one of the best amplifiers a person could buy, especially for the money. I have been reminded of them recently and have some questions. Is it correct that they were...
Top