Zoom H4n Pro RecorderFour-channel recording up to 24-bit, 96 kHz. Built-in stereo x/Y microphones, up to 140 dB SPL2 XLR/TRS inputs with locking connectors. Records directly to SD/SDHC cards up to 32 GB4-In/2-out USB Audio Interface. Monaural speaker: 400 mW 8 Line/phone-line output load Impedance- 10 k or more. Line rated output level: -10 dBu. Phone- 20 mW + 20 mW (into 32 load).Tempo:40.0 250.0 BPMUsb 2.0 high speed. Usb functions can be powered using USB bus power. Plug-in and Phantom power cannot be set during recording and playback