Special Sony 5 cd changer, it can work together as a master-slave unit to control a 200 cd mega storage. Even an x-fade is possible between 2 tracks, so you don't need a DJ at your party. Product Information The Sony CDP-CE525 is a 5 disc CD changer with numerous features. To reduce muddiness of sound, this Sony 5 CD changer adds its Direct Digital Sync circuitry. Shelf vibrations can affect tracking; hence this Sony CD player has an anti-resonant isolator. As one disc plays, you can browse four other discs in the Sony CDP-CE525 5 CD changer. Using the digital volume control (with original remote) you can even run this Sony CD player directly into a power amplifier for the enhanced sound. This Sony CDP-CE525 has a fluorescent blue display which delivers additional track information. Disc format: CD CD Mechanism: KSS-213B Frequency response: 2Hz to 20kHz Dynamic range: 98dB Signal to Noise Ratio: 107dB Channel separation: 100dB Total harmonic distortion: 0.004% Line output: 2V Digital connections: optical Dimensions: 430 x 120 x 393mm Weight: 5.4kg Packaged securely and insured.