TEN karaoke laser discs cost a top police inspector his career, his reputation and his freedom. Hon Yiu-ki, 40, went to prison yesterday for accepting the discs from a subordinate in exchange for a favourable appraisal report. The inspector, formerly based at Tsing Yi Police Station, lost his appeal against his conviction and was jailed for three months. Hon, who denied the charge of accepting an advantage in the Tsuen Wan Court last year, came from a family of policemen, the High Court heard. All five of his brothers were officers. In 1973 he received the Silver Whistle Award for excellent service. Mr Justice Ryan said it pained him to see a man with such a high reputation brought down over $1,200 worth of discs. 'It gives the court no pleasure to see a man of these achievements facing a prison sentence,' he said. 'But this is insidious behaviour which can only eat away at the standing and morale of the police force.' In July 1993, Hon called senior police constable Yiu Shun into his office. He knew that Constable Yiu could obtain karaoke discs at wholesale prices, and asked him to buy him a few. Constable Yiu said he decided not to buy any because he had once bought 100 fountain pen refills for Hon and had not been paid. On October 18, Hon informed his subordinate that he planned to write an unfavourable report about the number of sick days the constable had taken. He then expressed dissatisfaction with the 'empty promises' Constable Yiu had made about the karaoke discs. The constable went out and bought five discs for his boss. But Hon asked him for more discs. Constable Yiu said he realised his boss did not intend to pay him and would probably keep asking for more. He reported the matter to the Independent Commission Against Corruption. Hon was arrested after Constable Yiu delivered five more discs to him. Mr Justice Ryan rejected Hon's claim that he had taken the discs on a trial basis, and planned to buy them at wholesale prices.