The 210 DA G2 analog audio distribution amplifier is equipped with a stereo line level high-Z input, which accepts either a balanced (+4 dBu) or unbalanced (-10 dBV) source and has five active balanced low-Z stereo output amplifiers. It improves on the original 210 DA design by adding signal bypass relays which passively route the input to output one in the event of power loss, and a second power jack for an optional second redundant power supply.The 210 DA G2 is configured for stereo (25) operation by default but can be configured for monaural (110) output operation via internal jumpers. Each output amplifier is paired for stereo operation or may be summed for monaural operation without affecting the stereo separation of the other outputs. Each output amplifier has a recessed front panel level control trimmer.Main Features:Input gain configurable for +4 dBu balanced inputs or unbalanced -10 dBV input via internal jumpers, eliminating the need for external input level conversion.Stereo (25) outputs or monaural (110) outputs set via internal jumpers.Front panel output level adjustment trimmers.Removable euro-block screw terminal connectors are used for audio I/O connections. Necessary 5-position mating plugs are supplied.Signal bypass relays built-in, input to output one on power loss.Fully RFI proofed.Surge protected universal switching +/-15VDC desktop power supply with IEC AC inlet included.Dual (2x) power input jacks allow for redundant power with an optional second power supply.Up to three units may be mounted on the optional RA-1 rack shelf. Desktop and wall mounting are also possible.Specifications:Input Level: -10dBV or +4dBu nominal (jumper selectable). +24dBu max, 600 .Input Impedance: 20K balanced, 10 K unbalancedOutput Level: +4dBu nominal, + 24dBu max, 600 , balancedOutput Impedance: 100 balanced, 47 unbalancedSystem Gain: 20 dBFrequency Response: +/- 0.1dB (22Hz 22kHz)Noise: 86 dB below nominalTHD+N .005% (22Hz 22kHz @ +4 dBu)IMD .005% (250hz/7kHz)Power: PS-1515/IEC Desktop universal switching power supply with IEC inlet. +/-15 VDC 500mA output with 3-pin AMP-style latching power connector The Power supply will accept input voltages from 95 to 235 VAC, 50-60 Hz.Dimensions: 5.66″ x 7.125 x 1.58″, aluminum extrusion chassis with (4) #6-32 screw thread mounting holes for optional RA-1 rack shelf.Operating Environment: 32F/0C-122F/50C; 0%-95% non-condensing relative humidity; 10,000ft/3048m.