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Denon Pro DN-500CB - CD/Media Player with Bluetooth®, USB, Aux Inputs and RS-232c The Denon Pro DN-500CB is a versatile and affordable media player designed for education, retail, hotel, and conference applications. It supports CD playback and offers Bluetooth connectivity, USB playback, and a 3.5mm AUX input, allowing connection to virtually any playback device. Equipped with an RS-232c port for serial command control, the DN-500CB integrates seamlessly into professional AV setups. It features advanced functions typically found in higher-end players, including Bluetooth pairing, front panel lock, power-on play, direct track access, memory retention after power loss, and balanced XLR output. Key Features Plays CD media, USB audio files, and Bluetooth streaming Bluetooth version 5.0 with support for A2DP and AVRCP (1.3/1.4) profiles 3.5mm AUX input for connecting external devices RS-232c serial control port with downloadable command protocol guide Balanced XLR and unbalanced RCA audio outputs Front panel lock and power-on play functions Memory of settings after power loss Specifications Audio Specifications Audio channels: 2 channels / stereo Frequency response: 10 - 20,000 Hz, ±1.0 dB Dynamic range: > 85 dB (10-20,000 Hz A-weighted) Signal to Noise ratio: > 90 dB (1 kHz, 0 dB, A-weighted) Channel separation: > 80 dB (1 kHz, 0 dB, A-weighted) Total Harmonic Distortion (THD): Bluetooth Specifications Output class: Class C Bluetooth version: 5.0 Supported profiles: A2DP, AVRCP (1.3/1.4) Supported codecs: SBC, MP3, AAC, aptX Outputs XLR (balanced): 2.0 Vrms RCA (unbalanced): +4 dBu Remote Control IR Remote: Infrared protocol / NEC format, transmit output level > 200 mVp-p Serial Remote: D-sub 9-pin female RS-232C, full duplex mode, baud rate selectable 9600/38400 b/s, 8-bit data, 1 start bit, 1 stop bit, no parity, no flow control Audio File / Signal Sample rate: CD-DA, audio files 44.1 kHz Word length: CD-DA, audio files 16-bit File formats: WAV, MP3, AAC Bit rate: MP3, AAC, CBR/VBR ST/Mono 32~320 kbps ID3 tag: MP3 V1.x~2.4 CD Drive File system: CD-DA (CD-TEXT), CD-ROM (ISO9660) Disc compatibility: CD, CD-R USB Storage Device File system: FAT 16/32 Media type: Flash / HDD Environmental Operating temperature: 5° - 35° C (40° - 95° F) Operating humidity: Not specified