I took my faulty X-P100 pre amp and X-A50 power amps to JS Audio Repairs for repairs and decided to go for upgrade at the same time. They were done around two weeks. They sound so much better after the upgrading. The quality of the sound is amazing. It is very clear, detailed and solid. I even received Upgrade Certificates for my records. According to John, the sound should continue to improve as I play them. John is very knowledgeable. I no longer have to worry where to go if any of my Hi Fi needs repairing. Highly recommended.
Harry Chan