USDA Utility Summing & Distribution Amplifier 2X4

List: $250.00


SKU: HEN-USDA Categories: , Tag:


U.S.D.A. 2×4


U.S.D.A. (Utility Summing & Distribution Amplifier) is a unique 2×4 mini-DA that can be used to combine or split audio signals for distribution. It can be used as a 1×4 or 2×4 DA in stereo or mono.

There are 2 inputs (1 stereo pair) and 4 outputs (2 stereo pairs). Front panel “Stereo/Mono” switches select either a stereo or mono output from each output pair. USDA can produce both stereo and mono outputs simultaneously from a stereo source. Inputs and outputs can be operated either balanced or unbalanced. The audio level of each output can be adjusted over a 26dB range. All circuitry is transformerless and direct-coupled for sonic accuracy.

Connections are via plug-in euroblock connectors. USDA 2X4 is 1/3 rack width and can be mounted in an optional rack shelf, or wall mounted with optional wall/cabinet mounting brackets. USDA 2X4 is powered by an internal AC power supply.




Input Level
-14 to +8 dBm nominal
Input Impedance20K ohms bal, 10K ohms unbal
Output Level0 to +8 dBm nominal, +26 dBm max
Output Load600 ohms or higher per output, bal
ControlsOutput Level for each channel
Gain-12 to +14 dB
Frequency ResponseDC to 20kHz, ±0.25 dB
Distortion<.01% IM/THD
Noise>80 dB below nominal output, typ
Power Requirements115/230VAC, 50/60Hz, 3 W
Steel enclosure
Physical 5.7”w X 1.7”h X 6.0”d, 3lbs
Mounting Table top, optional rack mount shelf, optional wall/cabinet mounting brackets
ApprovalCity of Los Angeles Elect. Test Lab


Technical specifications subject to change without notice.