Apogee Quartet Audio Interface

  
Really great sounding audio interface. Cosmetically there are a few scratches on the item noting major. Working fine power on all touch screen button works only issues I'm unable to connect to my Mac computer. When first bought used it to make some good music stopped for a while. As I had other importace. I updated my computer then I notice its unable to recognise the device not sure if it's becos I'm using old mac and older version of iso Mac software. Software can be downloaded from Apogee website free of charge.