Going to sell my Optima MK3 . I bought the Radio Dec 2015 so I have had it for a year. I always use external speakers on my Mobil radios, This radio was used as a base on a power supply and was never mobil. I was moving so equipment around and reached around the back of the radio and plugged the speaker back into the Jack. and I guess I didn't push it in correctly and broke the plastic jack on the back of the radio. I opened the radio and saw that its connected to the board and Plastic. Now I have no audio to the internal or external.speakers.Asking 200.00 shipped USA only.Email Grogan11@yahoo.com with any questions.Should be an easy fix for someone who knows what their doing.I never had another problems with the radio.