Tested all functions on the screen and they worked on there. No skipping or errors. Didnt have a full system to test the audio. Out port seems to be slightly damaged/pushed in. Dont know if this affects it. Selling as is. The Sony CDP-C661 5 Disc CD Carousel Changer Player is a compact disc player designed to hold up to 5 CDs in a carousel format. With its sleek black design and stereo L/R RCA audio outputs, this CD changer by Sony is perfect for enjoying your favorite music collection. Made in China, this model is compatible with standard CD formats and offers a convenient way to change discs without having to manually insert each one. Perfect for any home audio setup, this CD changer by Sony is a reliable and stylish addition to your entertainment system.