After 30 years of playing LPs, cassettes, CDs, MP3s and a lot of rock and roll on the FM, the Pioneer SX-750 receiver became unusable. A loud buzz developed, I could not find someone to repair it, so we bought a new received , an Onkyo TX 8222. 
When I bought it, I spent a lot of time trying to choose the best one. This time there wasn’t many choices. At Best Buy, there was one receiver to choose from — take it or leave it. The Onkyo may not have as high quality or last as long as the Pioneer, but I may not be able to notice the difference anymore. See Not worrying about what you can’t hear