The Pioneer CT-S 810 S is a cassette deck that features a dual-capstan design, which helps in ensuring precise tape transport during playback and recording. This model is known for its solid construction and user-friendly interface. It has a frequency response range of 20 Hz to 20 kHz for normal tapes and 30 Hz to 18 kHz for metal tapes, allowing for a wide audio range. The signal-to-noise ratio is usually around 70 dB, providing clear sound quality without much background noise. The deck also includes Dolby B and C noise reduction options for enhanced audio fidelity while reducing hiss. It is equipped with features such as auto-reverse capability, a tape counter, and a clear LCD display, making it convenient for users during operation. Other specifications may include a maximum output level around 0.4 V, along with support for various tape types including chrome and metal.