The Philips AZ1110 features unequalled in accuracy and realism, state-of-the-art compact disc technology is at your fingertips with some of the most sought-after features in the industry. The CD Synchro Start Recording allows the cassette deck and CD player to communicate with one another to synchronize the start of a recording on an analog audio cassette deck with the start of a CD or a CD program. While you are recording, micro-electronic circuitry constantly monitors the final audio amplifier stage to ensure accurate, distortion-free recordings every time.