Denon, DN-300R.

Easy to Use SD/USB Recorder


DN300R. Overview.

The DN-300R 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-300R right out of the box and record to SD, USB or both. The DN-300R is exactly what the market is looking for in terms of a simple but high- quality recording solution for commercial applications.

The DN-300R gives installers and contractors the flexibility and convenience they need for total commercial recording capability.

DN-300R. Feature List.

  •  Records WAV and Mp3 files to SD and USB media simultaneously
  • Simple and easy to use
  • Powers-up in record-ready mode
  • Ability to record one media at -10dB for a safety track
  • Balanced and unbalanced inputs and outputs
  • Compact 1RU design

DN-300R. Specification.


Solid-state SD/USB audio recorder/player

Compatible Media (FAT16, FAT32)

USB Device (mass storage class) SD/SDHC SDXC

Supported File Formats:


Sampling frequency 44.1 kHz, Bit depth 192 or 256 kbps (recording); 64–320kbps and VBR (playback)

Format: MPEG1 Audio Layer 3, File extension. mp3


Sampling frequency 44.1, 48 kHz, Bit depth 192 or 256 kbps (recording); 64–320kbps and VBR (playback)

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)


Balanced XLR Nominal level: +4 dBu ± 1 dBu, Minimum level: – 40 dBu, Maximum level: 20 dBu ± 1 dBu

Input impedance: 18 kΩ

Unbalanced RCA, Nominal Level 10 dBV (at full scale: -16 dBu), Minimum input: -19 dBV or higher

Input impedance: 22 kΩ ± 10%


Balanced XLR, Nominal level +4dBu ± 1 dBu, Max output level +20 dBu ± 1 dBu

Output impedance: 600Ω ±10%

Unbalanced RCA, Nominal level -10 dBV ± 2 dbV, Minimum output level: 6 dbV ± 2 dbV

Output impedance: 600Ω ±10%


(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

Connection: IEC

Input Voltage: 100 – 240 V~, 50/60 Hz

Dimensions (w x d x h) 19.0” x 10.92” x 1.72” (484 x 277 x 44mm)

Weight: 6.6 lbs (3 kg)

DN-300R. Images.


DN-300R Rear Panel

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