Look at how dirty the grill is, on the right hand tape recorder. Looks like that one spent some serious time around smoke, especially considering how new it was when the photo was taken. The collage of images on the wall behind is pretty interesting too.
Either that is an upside down HF-85 preamp or a Harmon Kardon amp/preamp. HK did make an integrated with a stereo preamp and a single channel amp. Seeing the Fisher 80AZ or 100AZ mono amp near one speaker, could be the giveaway. Note that Louis is allegedly recording himself with one of the tape decks...
Hats off to tubeactive! From the photo it appears that the unit with the copper-colored faceplate is in fact Harman Kardon, not Eico. It took some digging to find it...
And those tape recorders look like Tandberg 64x, from about 1967. I like how he's got them built into the wall, it looks awesome. Those tape recorders are tube based.