First off, speaker cables and interconnect changes are not going to give you what you need, so tread carefully here.
What you are looking for is a more fundamental change... what stands are you using with your speakers, and are you using spikes? How is your turntable set up i.e. is it on a rack or wall-shelf, is it decoupled? What rack are you using, if any? Often, a different approach to setting up components e.g. with coupling or decoupling techniques can give you what you need without having to change components.
Mana Acoustics Racks / Bright Star IsoNodes Decoupling >> Allo DigiOne Player >> Pedja Rogic's Audial Model S DAC + Pioneer PL-71 turntable / Vista Audio phono-1 mk II / Denon PCL-5 headshell / Reson Reca >> LFD DLS >> LFD PA2M (SE) >> Royd RR3s.