ATI DA103 NanoAmp Series 1x3 Distribution Amplifier


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Dale #:ATI-DA103

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  • ATI DA103 Audio Distribution Amplifiers are inexpensive high performance amplifiers designed to split and isolate audio signal lines.

    The DA103 accepts a line level input, balanced or unbalanced audio at -20, -10 or +4dBu nominal and provides a line level output at +4dBm nominal level to balanced or unbalanced output lines. The DA103 input/output connectors are two piece solderless “Phoenix” types, individual for each input and output line.

    The DA103 accepts a maximum line input level of +22dBu and presents it to a high impedance (20Kohms) balanced instrumentation amplifier input and drives three servo balanced 600-ohm (minimum load) outputs up to +22dBm maximum. An internal input gain setting jumper plug optimizes the input stage gain, noise and headroom for nominal inputs at -20, -10 or +4dBu. The servo-balanced outputs automatically detect single-ended (one side grounded) loads, remove the drive signal from the grounded output and double the signal applied to the ungrounded output thus maintaining equal gain for both types of loading.

    The DA103 requires 22 to 30VDC power and is designed to use an external 24VDC power supply (included with the unit). A pair of loop-thru DC connectors on the rear of each module permits several units to be daisy-chained using our 20602-1 DC power cables to a single power supply. The WA100-1 (included) and WA100-2 (230VAC), optional, are 400mA supplies. The DA103 draws about 100mA at full output. Any combination of units, which totals less than the supply rating, can be powered by a single supply.


    • Independent servo balanced outputs
    • Master gain control
    • Individual output level controls
    • 1/3 RU wide enclosure, mounts 3 across in 1RU space
    • Multiple mounting and power options
  • OUTPUT LEVEL +22dBm MAX, +4dBm Nominal into 600 ohm balanced or unbalanced lines
    FREQUENCY RESPONSE +/- .25dB 20Hz to 20kHz DISTORSION .05%
    THD Maximum at +20dBm; .005% at nominal levels 20Hz to 20kHz
    NOISE MIC Input: EIN = -124dBm, LINE Input: EIN = -90dBm, 20Hz to 20kHz measurement bandwidth GAIN Internal DIPswitch gain selection at 30, 40, 60 or 80dB maximum
    PHANTOM POWER +20VDC regulated; Optional 48VDC available.
    POWER 22 to 30VDC, 24VDC Nominal. @ 100mA; See Power Supplies and Accessories
    DIMENSIONS 1.75"H x 5.6"W x 5.75"D; 1.25 lbs.
    MOUNTING Free standing or rack mountable; one, two or three units in 1¾" CONNECTORS Two piece quick release screw plug connector per input and outputs.
    POWER SUPPLIES WA100-1 Wall mount power supply (UL), 24VDC @ .4amp, 115 VAC/60Hz.
    WA100-2 Wall mount power supply or Table top power supply with IEC 320 Male 3 pin AC input connector, 24VDC @ .4amp, 230VAC/50Hz
    RACK MOUNT KITS 21075-501 19" Shelf Assembly for 1-3 NanoAmp
    WARRANTY Limited, One Year Warranty
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