Getting started
Controls and Connectors
[1] Headphones Level Control: Adjusts the volume of the
headphones output.
[8] Power Indicator: Lights Blue when N22H is Powered
On via battery or mains power.
[2] Headphones Output: Used for connecting headphones
to N22H. When using battery power, N22H automatically
powers on when headphones are connected to this ¼” jack.
[9] Battery Cover/Battery Compartment: Removable
cover for the 9V battery compartment and Power Mode
switch. Note: Only 9V batteries should be used.
[3] Outputs: Balanced, TRS outputs of the C.A.S.T. RR paths.
These Outputs are passive and do not require power to
operate.
[10] Power Mode Switch: Switches the headphone
output between Low and High Power modes.
Note: Only switch Power Modes when N22H is
Powered Off.
[4] Inputs: Combi jack inputs for connecting audio to the
C.A.S.T. TT paths. Also used for connecting stereo playback
during standalone operation. These analogue Inputs send
audio into the C.A.S.T. TT ports passively and do not require
power to operate.
[11] Power Inlet: Powers N22H’s headphone output
using the supplied 9V DC power supply. Battery is
disconnected internally when a DC supply is being used.
Note: When power inlet is used, N22H stays Powered
On.
[5] Width Switch: Adjusts the Width of the headphones
output between true Stereo or Mono.
[12] C.A.S.T. IN: Used to connect N22H to the C.A.S.T.
Output of another C.A.S.T.-enabled device.
Note: The C.A.S.T. IN port is covered using a Cat5
plug. Only remove this plug when N22H is to be used
with a C.A.S.T. OUT of another device.
[6] Source Switch: Selects the input source of N22H’s
headphone amplifier between the C.A.S.T. connections
[12/13] and Inputs 1-2 [4] for standalone operation.
[13] C.A.S.T. OUT: Used to connect N22H to the C.A.S.T.
IN of another C.A.S.T.-enabled device.
[7] Battery Low Indicator: Lights Red when internal power
drops below 6.8v.
Note: Duration between LED lighting Red and unit
powering off will vary from battery to battery and
headphones being used.
[14] Mic Stand Mount [Underside of N22H]: ⅜” thread
mount used to fix N22H onto a mic stand or bracket.
Note: For mic stands with a larger thread, a 5/8"
male to 3/8" female screw thread adapter should be
used.
