I have a TEAC A-H500i. It's a beautiful amp and sounds really nice. However, I feel like it is the weak link in my setup and I would be interested to hear any recommendations for a sub £1000 upgrade. I'd probably go for something used and try to get more for my money. Other kit - Rega R3 through Clearaudio Nano phono stage and airport express through Beresford Bushmaster DAC, speakers are Warfedale Diamond 10.1. Any suggestions much appreciated.