Ok, I did a quick scan of the ‘library’ here and found the first mention of 7120 in Hi-Fi News & RR in the May 1983 issues Hi-Fi Markets ad pages (these usually numbering 10 back then!).
The price was 179 quid.
Other than power output (about which I remembered correctly) no performance specifications were listed. However, the features list included references to ‘wide-range phono preamplifier’, ‘sensitive digital tuner’, ‘infrasonic filter’, ‘acoustically correct loudness compensation’ and ‘high-voltage, high-current output stage’.
Perhaps I should have also mentioned in my previous post that we both came away from the dem believing the sound of the 7120 to be not very far removed from that of the then new 3020A integrated that was also on offer - with both amps being demonstrated with Dual 505 vs Rega Planar 2 and driving the bottom three Castle models (Tyne, Clyde, and Trent?).
If it matters to you, the claimed ‘wide-range phono preamplifier’ section was quite decent sounding. Good enough, at least, to allow one to easily distinguish the differences between the likes of CS505 and Planar 2 (between which there exists a world of difference IME).
I would only add that the tuner section certainly didn't let its side down either. Actually, I was so impressed with this aspect of the 7120 that, some years later, I jumped at the chance to pick up a used example of the same series separate tuner to go with a 3240PE integrated (the latter a real power-house on the cheap).
Craig