The AIWA NSX-S506 is a high-performance stereo system that has been designed to deliver outstanding audio quality. This model is part of AIWA's NSX (Neo Sound Excellence) series, which is known for its exceptional sound clarity, dynamics, and detail.The NSX-S506 features a 2-channel (stereo) circuit design with a total output power of 4 x 50 watts (RMS). The amplifier uses AIWA's proprietary "Pure-Power Amplifiers" technology that provides quick and smooth response, as well as exceptional musicality.The unit also includes a digital media module that can play MP3, WMA, and WAV files from USB flash drives and external hard drives via USB connection. Additionally, the system has a built-in CD player that supports MP3 and WMA playback from CD-R/RW and CD-ROM discs.The NSX-S506 comes equipped with various inputs and outputs, such as RCA AUX (line) input, headphone output, and audio output terminals (speaker and pre-amp outputs) that offer versatile connectivity options.Some other notable features of this system include a wireless remote control, FM/AM tuner, bass/treble controls, and balance adjustment. Overall, the AIWA NSX-S506 is an excellent choice for audio enthusiasts who prioritize audio quality, convenience, and versatility.