Hello Richard. Welcome to AOS.
Some folk make tone controls and graphic equalisers work OK for them, but they are a bit frowned upon by the purists, as they interfere with the signal.
If it's deep, solid bass you're after, you could do worse than look at the TDL transmission line speakers that are for sale in our Private Exhibitions section. I think they may well give you what you seek, if still available.
Enjoy the forum,
Geoff.
It is impossible for anything digital to sound analogue, because it isn't analogue!