I have been talking on another (non-audio) forum to someone who has owned from new an pair of HB1 (1987), a NAD 3130 from the same year and a Mission DAC5 CDP. He continues to be happy with his HiFi. Questions: Would the amp benefit from new power supply caps, and would it be cost effective? Should I advise him at least to take the lid off and look for leakage? How does the DAD5 CDP rank these days? Would a modern external DAC add some sparkle? Would a modern cheap DVD/CD player match or beat it? Are there any issues with the HB1s of that age? His question on the other forum was about wirelessly relocating the speakers to the other end of the room. I advised him to go with his plan B - under carpet wires. He was pleased to be shown on the web flat cables for just such a purpose. I have advised not less that 2 sq mm cables. Should I have said more? Rob?