The DN-300RMKII records to both SD and USB media simultaneously – perfect for recording conferences where the client needs a copy of the recording after the event. With outstanding ease-of-use and simple operation, anyone can use the DN-300RMKII right out of the box and record to SD, USB or both. Utilizing Dual Mono or Dual Stereo modes, the ability to record a second mono or stereo file at -10dB on the same media is supported - even when recording to both SD and USB at the same time. The DN-300RMKII is exactly what the market is looking for in terms of a simple but high-quality recording solution for commercial applications. The DN-300RMKII gives installers and contractors the flexibility and convenience they need for total commercial recording capability. Records WAV and Mp3 files to SD and USB media simultaneously Simple and easy to use Powers-up in record-ready mode Dual Stereo & Dual Mono modes for recording -10dB safety tracks on the same media Balanced and unbalanced inputs and outputs Compact 1RU design Digital Audio System System: Solid-state SD/USB audio recorder/player Compatible Media (FAT16, FAT32) USB Device (mass storage class) SD/SDHC SDXC Supported File Formats MP3 Sampling frequency: 44.1 kHz Bit rate: 192, 256 kbps (recording); 64 - 320 kbps and VBR (playback) Format: MPEG1 Audio Layer 3 File extension: .mp3 WAV Sampling frequency: 44.1, 48 kHz Bit depth: 16-bit (44.1 kHz), 24-bit (48 kHz) Format: Waveform Audio File Format File extension: .wav Number of Channels: 2 channels / stereo Audio Frequency Range: 10 - 20 kHz (± 1.0dB recording, ± 0.8 dB playback) Signal-to-Noise Ratio Recording: > 95 dB (1 kHz, 0dB A-weighted) Playback: > 95 dB (1 kHz, 0dB A-weighted) Channel Separation Recording: > 80 dB (1 kHz, 0dB A-weighted) Playback: > 90 dB (1 kHz, 0dB A-weighted) Wow and Flutter: < 0.001 % Distortion Recording: < 0.008 % Playback: < 0.006 % Total Harmonic Distortion: < 0.01% (1 kHz, 0dB A-weighted) Inputs Balanced XLR Nominal level: +4 dBu ± 1 dBu Minimum level: - 40 dBu Maximum level: 20 dBu ± 1 dBu Input impedance: 18 kΩ Outputs Balanced XLR Nominal level: +4dBu ± 1 dBu Maximum output level: +20 dBu ± 1 dBu Output impedance: 600 Ω ± 10% Unbalanced RCA Nominal level: -10 dBV ± 2 dBV Minimum output level: 6 dBV ± 2 dBV Connectors (2) XLR outputs (1) 1/4" (6.35mm) headphone output (1) RCA stereo output pair (2) XLR inputs (1) RCA stereo input pair (1) USB port (1) SD card slot (1) IEC AC power input Power Connection: IEC Input Voltage: 100 - 240 V~, 50/60 Hz Dimensions (width x depth x height): 19.0" x 10.92" x 1.72" (484 x 277 x 44mm) Weight: 6.6 lbs (3 kg)