Pioneer AM/FM stereo receiver model SX-828. The SX-828 is from the years 1971 -1973. It was a higher power version of the SX-727. Rated at 60 watts per channel, RMS. It featured six toggle switches to control certain functions, instead of the push buttons used on the SX-727. Its performance specifications were only slightly better than those of the SX-72. List price in 1972 was $429.95, but jumped to $469.95 in '73.