• 1. Power / Standby button — Used to turn the device on and enable different standby modes.
  • 2. Play / Pause button — Used to play or pause the current track.
  • 3. Input button — Select which input you would like to play from.
  • 4. Favourites button — Used to access saved favourites.
  • 5. Front panel display — Displays ‘Now Playing’ information and allows access to set-up menus, and music input via the Naim remote.
  • 6. Front USB type A — Used for connecting USB storage.
  • 7. Network cable port — Used to attach to your network.
  • 8. Back USB port — Used for connecting USB storage.
  • 9. Digital Output — Used to connect to various hardware.
  • 10. Digital Inputs — Two optical inputs (Toslink 1 & 2) and two coaxial inputs (1 x RCA phono 3, 1 x BNC Connection 4).
  • 11. Wired IR Out — Output to connect via wired Infra-Red.
  • 12. Power sockets — Used to attach to the external power supply unit that connects to the mains power.
  • 13. Analogue Outputs (DIN) — Analogue — 5-pin DIN used to connect various media devices. DIN offers better sound quality when connecting between Naim components.
  • 14. Ground switch — Select the Default position unless the product is connected in a hi-fi system (via an analogue audio connection that includes an earth connection) incorporating another earthed source component, or mains ‘hum’ is audible through the loudspeakers.
  • 15. Wi-Fi Aerial ports — Connection for aerials used to connect the ND555 via Wi-Fi.
  • 16. Bluetooth Aerial port — Connection for aerial used to connect the ND555 via Bluetooth.
  • 17. Analogue Outputs (RCA phono) — Used to attach various media devices.