I must get round to buildign a secodn Williamson. A friend of mine had one and wanted to get a stereo pair but he never found a second one. He gave it to me in exachnage for repairs to his guitar amp. He also gave be some boxes of 'junk' which incuded a pair of new KT66s, other valves, valvholders, etc _and the Williamson mains and output transformers. In other words he'd got the hard to find bits to make his pair... His loss.... -tony