This is the Sansui Eight which is part of the Sansui single digit series. The series consisted of the Six, Seven, Eight and Eight Deluxe. Most likely the Eight was the first to hit the market in the early to mid 70’s ollowed shortly thereafter by the other models.
The Sansui Eight featured 50 watts per channel in to 8 ohms. Another nice feature was the relay operated speaker protection circuit which protected speakers from abnormal output levels and mutes output when powering on or off. It has a 4 gang FM tuner and a 3 gang AM tuner.
The Sansui single digit series was very well built and had fantastic switching capabilities. It measures 17.5 x 6 x 13 and weighs in at around 36 pounds.
These receivers sell for $500.00-$950.00 depending upon condition and functionality.