But if you cannot afford to get a cheap powered system and want to stick with the Coombers, here is a really good little mixing desk at present at an absolute bargain price

http://cgi.ebay.co.uk/yamaha-MG16-4-Mixing-Console_W0QQitemZ260215316358QQihZ016QQcategoryZ23785QQssPageNameZWDVWQQrdZ1QQcmdZVie