User guide
30 HYDRA2 Operator Manual
Using H20
SOURCE SETTINGS
H2O can be used to manage source 
settings—including mic gain and 
phantom power (48V) when using 
analogue I/O boxes and SRC when 
using digital I/O boxes.
Accessing from the Port Patching 
Screen
When viewing I/O boxes within H2O’s 
port patching screen, depending on which 
box type you are viewing, you will see a 
SOURCE SETTINGS button at the bottom 
of the window. Pressing this repopulates 
the screen with the relevant source 
settings. The first picture on this page 
shows accessible settings for Mic/Line 
I/O boxes. 
•  To enable source settings for any port, 
simply check the checkbox. 
•  Selecting the gain control displays a 
level slider as shown.
•  Phantom power can be toggled on and 
off by pressing the 48 V button.
•  Sample rate conversion can be toggled 
on and off by pressing the SRC button.
Accessing from the I/O Box & Setup 
Screen 
When viewing I/O boxes within the I/O 
Box & Setup Screen, select the SOURCE 
SETTINGS tab to view the controls as 
described above. The second image on 
this page shows available controls when 
viewing an AES I/O box.
SOURCE SETTINGS — AES I/O BOX
SOURCE SETTINGS — MIC/LINE BOX










