The Melco N1A is where it all started. Internally there are many detailed improvements to further reduce internal noise including a new capacitor bank to isolate the medical grade power supply, a new higher current 3 pole IEC connector with true ground and a built in power supply noise filter. Newly selected HDDs with vibration isolating cradles ensure a new low level of vibration combined with capacity increase to 6TB. A front panel USB 3.0 port makes importing from USB stick or USB drive very convenient and is in addition to the 3 rear USB 3.0 ports.