U-CONTROL UMA25S Technical Specifications Display Type 3-digit, 7-segment LED display System Information Frequency response 10 Hz – 20 kHz, ±1 dB @ 44.1 kHz sampling rate 10 Hz – 22 kHz, ±1 dB @ 48.0 kHz sampling rate THD 0.05% typ. @ -10 dBV, 1 kHz Crosstalk -65 dB, 1 kHz S/N ratio A/D 88 dB typ. @ 1 kHz, A-weighted D/A 100 dB typ. @ 1 kHz, A-weighted Power Supply USB connection 5 V 𝌂, max. 200 mA External 9 V 𝌂, max.