The Denon DR-670 is a dual cassette deck designed for audio playback and recording. It features a sleek design typical of the Denon brand and is equipped with a variety of functionalities that make it convenient for personal and professional use. The DR-670 supports both normal and chrome tape formats, enabling versatility in tape selection. It includes features such as automatic reverse playback, allowing for uninterrupted listening by switching between sides of the tape seamlessly. Key specifications include Dolby B and C noise reduction, which enhances the overall sound quality by minimizing tape hiss and improving audio clarity. The device also includes pitch control, enabling users to adjust playback speed for specific needs, and a built-in timer for scheduling recordings. The front panel typically houses controls for tape transport, function selection, and an LED display for easy tracking of playback status. Connectivity options frequently consist of RCA inputs and outputs, making it compatible with various audio equipment.