Maintained! Sansui's 4ch surround processor. You can change the sound quality to your liking by changing 4 different surround modes. It is also equipped with a volume, and can also be used as a preamp in 2ch mode. Dullness over time, there are small scars (Sasaki Shota)
Maintenance information: 2024.4.7 Maintained (input/output terminal soldering corrected as a result of internal inspections. Switch and volume cleaning. The solder on the switch and volume terminals is also thin, so it feels like it floats, and all solder has been corrected. The power supply circuit has also been strengthened with soldering. (There are no abnormalities in all input/output checks)
Accessories: original box
Main specifications: 4 channel surround processor, 2 input systems, equipped with 4 modes (QS, SYNTHESIZER, HALL, 2 ch) W470 x H67 x D320 mm 4.5 kg