The N20 caching music server / streamer provides the fidelity, features and flexibility the digital audiophile will find attractive and meaningful. A significant advantage is that the N20 contains two empty storage bays. This allows you to customize storage to best meet your budget and intended use. For example, these days many music lovers listen exclusively to streaming content.Therefore, no internal storage is necessary (although it can be easily added at any time if desired). Have a modestly sized music collection? Install an inexpensive 2TB HDD. Own a massive music library? Opt-in for 2 SSDs or HDDs. Fully loaded, the N20 is capable of accommodating an incredible 16TB of solid-state storage!