The Sanyo RD-611 is a cassette tape deck that was manufactured between 1978 and 1980 in Japan. It features a silver or black finish and has a power consumption of 40 W. The dimensions are 420 mm in width, 150 mm in height, and 315 mm in depth, with a weight of 6.5 kg. This model is equipped with a combination head for recording and playback and an additional ferrite erase head, utilizing two motors – one direct drive servo motor for playback and one DC servo motor for rewinding. The tape speed is 4.75 cm/s, with synchronization fluctuations of 0.12, indicating accurate playback characteristics. It supports different tape types, including Normal (Type I), Cr02 (Type II), and FeCr (Type III), with frequency response ranges from 30 Hz to 14 kHz for Standard tapes, extending to 17 kHz for Cr02 and FeCr tapes. The Sanyo RD-611 offers various input options, including line inputs and microphone inputs, and adjustable line outputs. It also integrates Dolby noise reduction, enhancing the signal-to-noise ratio to 64 dB. Special features include a limiter, adjustable equalization and pre-magnetization, and separate peak displays for left and right channels. Furthermore, it is equipped with two microphone inputs located on the front for convenience. The rewind time for a C-60 cassette is approximately 90 seconds.
