Analog Audio Input -Configuration: Stereo / Dual-Mono. -Impedance: >10 kΩ load impedance, electronically balanced. (No jumper selection available for 600 Ω. Through-hole pads are available on I/O module for user-installed 600 Ω termination.) -Nominal Input Level:Software adjustable from –4.0 to +13.0 dBu (VU). -Maximum Input Level:+27 dBu. Connectors:Two XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3 elec . . .