10-Slot 500 Series Rack with NG500 Expansion _TITAN is complete recall system designed to provide total integration with your beloved analogue equipment. It extends the 500 series connector with additional pins where modules can be designed to support digital recall or any other vendor specific functionalities. This extension is part of the new open standard “ng500” – “Next Generation 500 series” which allows other manufacturers to design and implement digitally controlled analog devices.