The Dual XC4100 Cassette Player Receiver. Dual Audio Head Units and Receivers control the sound you want, whether in your car or on the water. With painstaking attention to detail and quality. Dual Audio Head Units and receivers are compatible with technology like MP3, iPods, HD radio and more. The Dual XC4100 Cassette Player Receiver has a 30 Watt peak, making it an excellent addition to your stereo system. With volume control, tone, balance, and more, the Dual XC4100 Cassette Player Receiver is the perfect centerpiece to your car audio system.