29 January 2025

Sansui D-550M/SC-D77 (1981) | Direct-O-Matic

 

Sansui D-550M/SC-D77 (1981) | Direct-O-Matic

More Music. Less Noise. More Machine. Sansui. Noise is a thief. It robs you of the quality of music you are entitled to hear from a fine cassette deck. Without the SDSF (Sansui Dyna-Scrape Filter) music sound gritty, whether the sound is loud or soft. The Dyna-Scrape Filter, reduces modulation noise by as much as 10dB! That represents a startling audible difference and a profound reduction in this most pervasive of tape noises. Until now, scrape filters were found only in professional reel to reel tape decks. Now Sansui has ingeniously engineered this valuable technology into a truly affordable cassette deck. The D-550M (SC-D77) is a 3-head machine with full IC logic control and an open cassette compartment called Direct-O-Matic. It has a frequency response from 25-21,000Hz (± 3dB, metal tape); user adjustable bias control; 2-motor Direct Drive mechanism that reduces wow and flutter to a miniscule 0.035% (WRMS); plus state-of-the-art heads and electronics that improves signal to noise ratio to 70dB (with Dolby-BTM). More music, less noise. More machine. Better value. That's what Sansui cassette decks are all about. There were two color variations, silver and black. The Japanese market model was named SC-D77 while the international market model was the D-550M. Remote control is possible by combining the optional remote control unit RS-7.

Sansui D-550M/SC-D77 (1981) | Direct-O-Matic

Sansui D-550M/SC-D77 (1981) | Direct-O-Matic

Sansui D-550M/SC-D77 (1981) | Direct-O-Matic

Sansui D-550M/SC-D77 (1981) | Direct-O-Matic