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Denon DN-300R MKII Solid-State SD and USB Audio Recorder


Denon DN-300R MKII Solid-State SD and USB Audio Recorder


The Denon DN-300R MKII is a rack-mountable audio recorder and playback device designed for installed sound applications in houses of worship, music clubs, and more. It can record to SDHC/SDXC cards and USB media, either one at a time or simultaneously to both, making it ideal for capturing conferences or concerts where the client needs a copy of the recording immediately after the event.

The DN-300R MKII features balanced XLR and unbalanced RCA I/O for connecting its input to an external audio source and its output to powered speakers or a sound system. The DN-300R MKII records WAV files at up to 24-bit / 48 kHz and MP3 files at up to 256 kb/s.

Multiple record options are available including mono, stereo, dual mono, and dual stereo. In dual-mono and dual-stereo modes, two audio files are created with the second one recorded at -10 dB to help protect your recording against accidental clipping. Recording can be started manually or automatically when the input level passes a certain threshold.

Various playback options enable you to play just a single track or all tracks in a folder or on the device, in repeat or random playback modes. A headphone output with independent volume control allows you to monitor quietly while recording or playing back.

What’s New on the MKII

Dual-stereo and dual-mono modes (16-bit / 44.1 kHz only) for recording standard and -10 dB safety tracks on SD and USB media at the same time

Key Features
Records WAV and MP3 files to SD (SDHC/SDXC recommended) and USB media simultaneously
Simple and easy to use
Balanced XLR and unbalanced RCA inputs and outputs
Powers up in record-ready mode
Multiple record modes including mono, stereo, and more
Multiple playback modes including repeat, random, and more
Selectable auto track function starts and stops recording when the input level passes a certain threshold, or stops recording after a definable period of time has elapsed
1/4″ headphone output with independent volume control
Rack-mountable design occupies 1 RU of rack space

UPC: 694318023297




System Media recorder and player
Compatible Media USB: 256 MB to 2 TB
SD Card: 64 MB to 2 GB
SDHC Card: 4 to 32 GB
SDXC Card: 48 to 128 GB
Supported File Systems FAT16, FAT32
Supported File Formats MP3
Sampling Frequency: 44.1 kHz
Bit Rate (Recording): 192, 256 kbps
Bit Rate (Playback): 64 to 320 kbps and VBR
Format: MPEG1 Audio Layer 3
File Extension: .mp3WAV
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 x channels, stereo
Frequency Response 10 Hz to 20 kHz, ±1.0 dB (recording), ±0.8 dB (playback)
S/N Ratio Recording: > 95 dB
Playback: > 95 dB
(1 kHz, 0 dB, A-weighted)
Channel Separation Recording: > 80 dB
Playback: > 90 dB
(1 kHz, 0 dB, A-weighted)
Wow & Flutter < 0.001%
Distortion Recording: < 0.008%
Playback: < 0.006%
Total Harmonic Distortion < 0.01% (1 kHz, 0 dB, A-weighted)
Balanced XLR Inputs Nominal Level: +4 dBu, ±1 dBu
Minimum Level: -40 dBu
Maximum Level: 20 dBu, ±1 dBu
Input Impedance: 18 kOhms
Unbalanced RCA Inputs Nominal Level: -10 dBV (at full scale: -16 dB)
Minimum Input Level: -19 dBV or higher
Input Impedance: 22 kOhms, ±10%
Balanced XLR Outputs Nominal Level: +4 dBu, ±1 dBu
Maximum Output Level: +20 dBu, ±1 dBu
Output Impedance: 600 Ohms, ±10%
Unbalanced RCA Outputs Nominal Level: -10 dBV, ±2 dBV
Minimum Output Level: 6 dBV, ±2 dBV
Output Impedance: 600 Ohms, ±10%
Connectors 2 x XLR inputs
2 x XLR outputs
1 x RCA stereo input pair
1 x RCA stereo output pair
1 x 1/4″ / 6.35 mm headphone output
1 x USB port
1 x SD card slot
1 x IEC power input
Power Supply Input Voltage: 100-240 VAC, 50/60 Hz
Rack Space 1 RU
Dimensions (W x D x H) 19.0 x 10.0 x 1.7″ / 483.0 x 254.0 x 44.0 mm
Weight 6.6 lb / 3.0 kg
Packaging Info
Package Weight 11.2 lb
Box Dimensions (LxWxH) 21.7 x 15.2 x 5.9″

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