I need an economical but good phono preamp?

Hopefully the hum is not comming from your receiver. Re hook up all ground wires. Also it may be ground loop hum. If you have a 3 prong plug.. plug it into a 2 prong plug and plug that into your power source. I also have a Nagaoka MP11 on a Linn Sondek 12 I recently bought. It came with a Basik LV X tone arm. How do you like the Nagaoka? This is new to me. Thanks

+1 on the Cambridge 640P. It was such an improvement over my previous (an Amber Model 17) that I ended up upgrading everything else to match its resolution and musicality. It's crazy how good this phono stage is for its price. I read one review that preferred it slightly over the $450 Graham Slee, so I suppose you'd need to spend $750 for the Dynavector or $925 for the Slee Era Gold to get a noticeably better-sounding unit.

For under $200, the CA 640P is an easy recommend! You might stumble onto a used unit that may do this or that a little better, but the CA does everything quite respectably!!!

You may want to consider upgrading the HK to a 2-channel unit that has a healthy phono pre built in? ...just a thought.

Good luck!