Okay, guys...no baiting here. I am a 60 year old retired school secretary and have absolutely no knowledge of this system. I DO remember my father and I removing it (he was a banker and the executor of an elderly man's will.) My uncle built a magnificent wall in our family room to accomodate this system and it was played relentlessly until about 1966 or so and then my parents moved and it went into storage. So when you ask me a technical question, I have no idea what you're asking. I'm sincerely glad I fell upon this website simply because my father and I both loved music. I understand this is an ANCIENT piece of an audio system, however, I can't help but believe there is someone out there who knows what it is and would appreciate it. Plus, my mom is in a home with ahlzeimers andf we can use whatever this would bring. So, with that said, I will attempt to take some pics for ya'll in the next few days so you can check it out. It's extremely heavy!