This is a Marantz professional compact flash solid state audio recorder in excellent operational condition, and very good to excellent condition aesthetically. This unit operates/functions and performs as it should. It utilizes Compact Flash Cards for the recording medium.Extensive Capability, Simple Operation! For years, Marantz Professional has been an industry leader in the recording and gathering of audio for every application from Houses of Worship to Corporate Boardrooms to Municipalities to Courthouses and beyond. Moving forward with technology, the new Marantz PMD570.