Sansui?

An AU-9500 pushing a set of JBL 4311s in a vintage setup is a killer pairing. As mentioned, vintage Sansui & JBL were considered soulmates back in the day - still look and play with all the business!

I bought a Sansui  G-5700 (I think) for my kids. I was very impressed with the sound. Sansui of that era was very good, and to this day bring a very high price. In mainstream low end electronics, I think Sansui was very tough to beat. I would stay from anything that wasn't fully serviced including a recap. Receivers were quite good, but an integrated might bring a higher level of sound quality.

Highly recommend an AU-717 integrated. I have one bought new in 1980 and recently had it restored. A stunning piece that rivals many modern integrateds…and a classic well respected by many. Although not in use currently, having owned it for 40+ years, will never part with it. But they’re out there and not terribly expensive. 
 

My very first receiver was Sansui back in the late 60's. I had that thing for 20 years I would guess. No clue which model but it was a great receiver. 

I sold all these in the golden age from ‘73 to the coming of digital tuning. In receivers, the Eight Deluxe was the cream of the crop. In integrated amps, the AU999 and AU9500 were great. Models below were excellent too. I got my brother a 5050 he used for decades, replacing a stack of Dyna tube gear. The 7070 was the more powerful version. The higher models 8080 and 9090 were sold with Dolby NR onboard, a kind of vestigial organ.  Match any of these with KLH 5 reissues or JBL L100 reissues and your brother will be happy indeed.