Mix control allows you to blend your microphone signal and pre-recorded audio Headphone output power 130 mW at 1 kHz, 10% T.H.D., 32 ohm load. Condenser microphone with USB output for digital recording  Frequency response 20 – 20,000 Hz. High quality A/D converter with 16 bit, 44.1/48 kHz sampling rate for superb audio. Headphone jack with volume control allows you to monitor the microphone signal with no delay. High output internal headphone amplifier delivers superior clarity and musical detail as well as more volume overall. System Requirements Windows 8.1, Windows 10, and Mac OS X or later; USB 1.0 or 2.0, and 64 MB or more of RAM.