The ADA-204A is a two channel, 1 input by 4 output audio distribution amplifier.
The ADA-204A can function as two independent 1x4 amplifiers, a stereo 1x4 system, or as a mono 1x8 distribution amplifier.
All inputs and outputs are balanced, and the gain of each output is independently adjustable. The 8 gain controls are accessible from the front of the unit and are variable over a wide range, in order to accommodate most signal level requirements.
| Power Requirements | 115 VAC, 60 Hz or 230 VAC, 50 Hz; 8.5 W |
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| Input Impedance | 20 kohms balanced |
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| Input Signal Level | +8 dBm nominal, +26 dBm maximum |
| Input Connectors | Screw clamp terminal blocks |
| Output Load Impedance | 600 ohms nominal |
| Common Mode Rejection | -86 dB @ 60 Hz |
| Number of Outputs | 4 per channel, 2 channels total |
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| Output Impedance | 60 ohms balanced |
| Output Level | +8 dBm nominal, +26 dBm maximum |
| Output Gain Range | -6 dB/+16 dB |
| Output Connectors | Screw clamp terminal blocks |
| DC Offset | Less than 20 mV |
| Frequency Response | 20 Hz to 30 kHz +/-0.1 dB |
| T. H. D. + Noise | Less than .015%, 20 Hz to 30 kHz, nominal output |
| Hum and Noise | -90 dBm, 20 Hz to 30 kHz |
| Crosstalk | -110 dB @ 20 kHz |
| ADA-204A | 8.1 W x 1.9 H x 5.1 D |
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| ADA-204A | Stand alone Table Top Version |
| ADA-204A/R1 | 1 Unit Rack Mounted in 1 RU Frame. Unit takes 1/2 of the rack frame |
| ADA-204A/R2 | 2 Units Rack Mounted in 1 RU Frame |
| ADA-204A/A | Assembly unit only. Ordered for existing Frames |
| ADA-204A/M | Manual |
| PH-3/FR | Phase 3 Rack Frame with no Products Installed |
| PH-3/BF | Phase 3 Blank Front Panel plate |
| PH-3/BR | Phase 3 Blank Rear Panel Plate |
| PH-3/DB | Phase 3 Under the Desk Mounting Bracket |
