Definitely not a rockford. Somebody was probably trying to copy the logo or make someone think this amp was something its not. Looks a lot like an old fusion amplifier I used to have(internally anyways). Also I know that the older directed amplifiers looked similiar to the fusion internally as well. Almost positive this is out of that same build house. The transistor clamp downs and the circuit board layout are a dead give away. I worked on a few of those amplifiers and remember the clamp downs being a real ***** to get back in if you didn't get them started just right. Definitely not an early 80's amp. Circuit boards were nowhere near this sophisticated and clean in the early 80's although the outside does make it look older than what I think it really is. I guess mid to late 90's as thats how old the fusion and directed amps were that I am comparing this too. Not exactly sure what you have but looks to be respectable quality if it's anything like the fusion/directed amps. I would say you'll get a clean 400 watts rms at least out of this.