User Manual
16x16 Analog IO Module 
Provides 16 channels of analog input and output. 
Digital Coaxial RCA S/PDIF ports are also provided. 
-
SPDIF IN replaces a pair of analog or digital audio inputs. Routing of the S/PDIF input is set with the S/PDIF 
Replaces drop down menu, found in the Apogee Maestroʼs Input tab window. 
-
SPDIF OUT will duplicate any pair of analog or digital audio outputs. Routing of the S/PDIF Output is set with the S/
PDIF Mirrors drop down menu, found in the Apogee Maestroʼs Output tab window. 
Incompatible I/O Modules 
The following I/O modules cannot be installed into a Symphony I/O Mk II chassis: 
16 Analog In + 16 Digital Out (AI16) 
16 Analog Out + 16 Digital In (AO16) 
SYMPHONY I/O MK II - USER’S GUIDE Page 22










