Cayin N3Ultra A3H+ while Auto On/Off rapidly powers

while Auto On/Off rapidly powers up the headset when it’s picked up and shuts down to save energy when not in use

Each AMP13 is tested and matched with an AP audio analyzer

the UE7 will not let you down

Battery Case Charging Time: Type-C about 2 hours，Wireless charging about 4 hours

11 to 12h (single ended) / 8 to 9h (balanced)

Cayin N3Ultra A3H+ while Auto On/Off rapidly powersGen3 Vacuum Tube Circuit This is our second DAP using JAN6418. The N3Pro was our first attempt and we have spent a lot of effort to install a pair of JAN6418 into a relatively compact DAP chassis. Unfortunately, we need to accept the following two limitations at the 2020 implementation: JAN6418 is a Subminiature Pentode tube; we need a pair for the stereo circuit, a set of 4 for the balanced circuit. Since we can only install a pair of JAN6418 in