audio-talk

my Brother has heard my WAD KT88 and has fallen for the sound. He has a budget of around £500 and is looking to get a good second hand unit. Looking at the World audio designs stuff as it seems good value for money second had. Not limited to the KT88 and would consider others. The WAD 6550 also looks good and he really likes the look of that one.
Are there any other manufacturers to consider or has anyone got something in this price bracket for sale.