mp3, .
1 KHz sampling rate on. Technical Pro 4500 Watts Digital Hybrid Amplifier Preamp Tuner with 2 Mic, RCA, HDMI, Headphone, USB and SD Card Inputs, FM Radio, Recorder, Wireless Remote, for Home Theater EntertainmentFeatures: 380 watts RMS 4500 watts peak powerInputs: RCA ( 2 audio sources), USB, SD Card, MP3 (3. 5mm)USB & SD Card maximum size: 128GBPlays.