1977 seems like a banner year for solid state amps, receivers, tuners, you name it. Still far enough away from 1980 to not be tempted the mass-market junkification that swept the audio world, yet mature enough with the technology to produce some stellar performers. The Sansui 9900 is on many people's "best tuners of all time" list, and for good reason. This particular one was at another estate sale in Northern California. I don't remember what I paid for it, but am pretty sure it was around the $50 mark. Nice.
If you have any more info, photos, video links, stories of your own Sansui 9900, please leave a comment or email me.