My current system is taking over and out of step with my current listening habits. I also have a pile of older gear from the past 25 years gathering dust in the loft. I am going to have a serious cull of my gear while bringing it up to date a bit. My first step will be to decide on what amp to base the revised system on. My amp for the past 20 years has been a Marantz PM66se KI Signature and I am trying to decide whether to keep this as the basis for the new system. Inputs will be CD, Turntable and DAB and I also want Bluetooth, but I can use an external Bluetooth receiver if I keep the current amp. Should I keep this amp or would it be worth replacing it? Do modern amps perform much better for the same or less money? If I replace it, I would want an amp with built in Bluetooth and full remote control. MM phono inputs would not be important as I have an external MM pre amp. Any advice welcome.