My Panasonic RF-7270 Royal-Aire is exceptionally good for a 40-year-old radio. It's not quite an RF-2200 or RF-888 in terms of sensitivity and selectivity, but the RF-7270's audio fidelity is superior. Not quite hi-fi, but it sounds pretty good playing an old Solid Gold Rock n' Roll cassette or listening to my local oldies radio station. The speaker is a 5" x 7" oval driven by two power transistors. I could not find any evidence of ICs inside, so I believe this radio uses discrete components. A total of 17 transistors are employed. I commend Panasonic for having the restraint not to tout that achievement on the exterior of the radio. The radio cleaned up nicely. The only internal gremlin was an old, over-stretched drive belt for the cassette mechanism. Believe it or not, you can still order new cassette drive belts online. A replacement belt made the Royal-Aire perform as if new. I can't find much information about this radio other than a brief mention in an article in the February, 1971 issue of Popular Mechanics. If anyone knows more about it, I'm all ears. BTW, inside the radio, I found a pleasant surprise. The guys at Panasonic had included a large, printed copy of the RF-7270's schematic -- carefully folded and tucked between the chassis and the case. Nice touch!