I bought a Cambridge amplifier from Richer Sounds over 5 years ago. I chose this higher end amp because think you get what you pay for and it was very well-reviewed. I was very disappointed when it failed just before Christmas. I paid a £40 fixed fee which included packaging delivered, amp collected and fault diagnosis. It was returned within a week, having had a new front end pcb. This done at no cost to me. I was delighted that Richer Sounds recognise the value of customer goodwill and I would certainly recommend Richer Sounds based my experience. First-class customer service.