The Sanyo RD-4530 is a cassette tape deck that was manufactured in Japan between 1974 and 1976. It features a silver and black design, accentuated with a wooden casing. The device is equipped with DNL (Dynamic Noise Limiter) technology aimed at improving the audio quality of recorded tapes. It was originally priced around 350 DM. The RD-4530 supports various tape types, including Normal, Chrome, Ferrochrome, and Metal. Its notable specifications include two audio heads—one for recording and playback and one for erasing. The frequency response varies with tape type, notably 20 - 15,000 Hz for Normal tapes and up to 17,000 Hz for Chrome tapes. The device has a signal-to-noise ratio of 50 dB with Dolby Off, improving to 60 dB when Dolby noise reduction is engaged. The unit includes features like title search, a VU meter, and an overload limiter. Dimensions for the RD-4530 are not explicitly provided, but its compact design suits home audio systems. Other models in the SD series include the RD-4025, RD-4055, RD-4080, and RD-4600, among others.
