I was thinking of setting a small system in my bedroom when I remembered I had this. It's pretty clean, was in a box. The tubes are 6anb GE Electronic tube, 6au6 Daystrom Nichmen, 6eu7 all it says is Great Britain, the el84 have no insignia on them, someone wrote 6bq5 Ray on them, (could the ray mean raytheon), the gz34 just has Great Britain on it. Should I go ahead and fire it up. Any advice would be greatly appreciated. Thanks John