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Description:
Plug-in Power: +6V supplied across 5.6Kohm resistor, 1mA maximum
Current, no headphone load: <10mA
Estimated battery life in normal use (40mW per channel output): 8 hours
Input Impedance: 5Kohm
Output Impedance: <1kohm
Gain Range: -60dB to +32dB
Maximum Input Level, 1kHz @ 1% THD: 0dBV
Maximum Output Level, 1kHz @ 1% THD, per channel:

600ohm load: 8mW (+7dBV)
300ohm load: 16mW
200ohm load: 22mW
100ohm load: 45mW
50ohm load: 90mW
24ohm load: 150mW
16ohm load: 250mW

Total Harmonic Distortion, 1kHz @ 0dBV into >600ohm: <0.01%
Crosstalk, 1kHz @ 0dBV: -80dB
Frequency Response: 20Hz to 40kHz
Equivalent Input Noise, maximum gain: -115dBV unweighted; -118dBA
Case size: 3.2" x 2.1" x 0.9" (80mm x 54mm x 23mm)
Weight (with battery): 5 oz (143g)