Input Connections - Grace m902 Owner's Manual

aC PoweR CoRD
Connect the supplied AC cord to the IEC power entry module on the rear panel of the m902. For
safety, it is recommended that the cable be connected to a grounded outlet.
PoweR-uP seQuenCe (VERY IMPORTANT!!)
Before powering up your m902, if you are using the line level monitor outputs, make sure your
monitor speakers or power amps connected to your monitors are turned OFF. This will prevent any
"popping" in your speaker systems. Once the m902 and the rest of your audio system are powered up,
turn on the power to your speakers (amplifiers). When powering down, we recommend that you first
power off your speaker system and then power down the m902.
It should also be noted that while the power sequence will not damage headphones connected to the
m902, you should NOT be wearing them when power is applied or turned off because an audible and
potentially loud 'pop' may occur.

InpuT ConneCTIons

The input/output/interface connections highlighted earlier in this manual are detailed below. Please
contact us if you have any questions regarding cable terminations or pinout specifications.
BalanCeD analoG InPuTs - The balanced stereo analog input is provided via female XLRs.
Connection is made using standard balanced XLR cables. This input is wired to the pin 1 shield, pin 2
positive pin 3 negative XLR standard.
unBalanCeD analoG InPuT - This stereo input is provided for interfacing with consumer level
(-10dBv) unbalanced analog sources. Connections are made using standard RCA cables.
A es3 DIGITal InPuT - The stereo AES3 input is provided via one female XLR connector. This
conforms to the AES3 standard. Use of high quality 110 Ohm balanced cable is highly recommended.
s/PDIF CoaXIal InPuT - Standard coaxial stereo digital input. The input impedance is 75 Ohms.
Use a quality 75 Ohm cable for connections to this input.
ToslInK InPuT - Standard stereo optical input connector for use with consumer devices. Use a
standard TOSLINK optical cable for connections to this input.
usB InPuT - The stereo USB input for connection to a host PC or MAC. Use a standard USB TYPE A
-to- TYPE B mini cable. The TYPE A connector is to be plugged in to the HOST PC and the TYPE B mini
connector is to be used with the m902 input.
8 grace design m902
owner's manual