I have for sale my highly modified World Audio Design 6550 amp. It is a single input power amp with a volume control. This has been highly modified with over £500 spent on upgrading the caps alone, that is without the cost of fitting them. The valve complement is, a quad of TungSol 6550 valves, 2 Harma 5U4G rectifier valves and 2 Mullard ECF80 valves. All the valves have had little use and have many, many hours of listening in them yet. All modifications were done to the amp before I purchased it. It will also be supplied with the valve cage which is in itself very rare. Pics on request, you can reach me at [email]ricky4sharon@googlemail.com[/email] £600 O.N.O. I am also selling a pair of Decware amps, whichever sells first, I will be keeping the other.