Fisher RS-1060 receiver. One step down from the top model (RS-1080) and only rated at 125wpc at 8ohms. This was a Sanyo model (made after Sanyo bought Fisher in 1975). There seemed to be a lot of resentment over that buyout which meant these receivers never got the attention they deserved.
I used that receiver with my JBL L150s, and at another point, also used it to power two pairs of Cerwin-Vega D-9's (4 speakers). I'm not sure what it was putting out into that ~4ohm load but it was pretty amazing. It was at least as powerful as the Pioneer SX-1050 I had, if not more.