User Manual
8
Rear Panel
• AC  Mains  Inlet.  Standard  IEC  receptacle  for  connection  of  AC  mains.  Red  16Line  features  a 
‘Universal’ PSU, enabling it to operate on any supply voltage between 100 V and 240 V AC.
• Word Clock – Input allows synchronisation to word clock.
• Word Clock – Output provides an output of the chosen system clock reference.
• Loop Sync I/O sockets allow Red 16Line to integrate with a standard Pro Tools system I/O chain.
• Dual Thunderbolt  3  Connection. Two  ports allow either  direct or chained  connection to  your 
workstation.
• Pro Tools | HD  Interface. Two  Mini  DigiLink  Primary  connectors; use  Mini  DigiLink  cables to 
connect to a Pro Tools | HD HDX PCIe card or Pro Tools | HD Native system.
• Line Outputs on two 25-way DB25 female connectors.
  DB25 connectors are wired according to the AES59 Standard (also known as the TASCAM Analogue standard).
• Line Inputs on two 25-way DB25 female connectors.
   Note that Line input circuits 1 & 2 can be re-assigned to the Microphone and/or Instrument connectors so may 
not always be available on the input connector. See page 10 for further information.
• Microphone Inputs on two XLR-3 female connectors.
• Network. Two RJ45 Ethernet connectors for the Dante network. The connectors form an integral 
2-port switch, allowing either to be used on the network.
• ADAT I/O 1 and 2. Two independent 8-channel ADAT optical inputs and outputs using standard 
TOSLINK connectors. Optical I/O 1 can also be used in ‘Optical S/PDIF’ mode.
• S/PDIF I/O. 2-channel digital interface on RCA (phono) connectors.
• Monitor Outputs. Balanced 1/4” TRS jacks for connection of Left and Right monitor loudspeakers. 
Outputs are at line level so unpowered speakers will require external amplification.
See Appendix 1, page 24 for the connector pinouts.
Thunderbolt 3 
Interface
Pro Tools | HD 
Interface
Line Inputs
Loop 
Sync
Word 
Clock
AC Inlet
2 x ADAT 
Optical I/O
Dante 
Network
S/PDIF 
I/O
L/R Monitor 
Outputs
Line Outputs
Microphone
Inputs










