Advice from apartment dwellers

I have the same issues as you. I would go for a pair of Harbeth SHL5s and perhaps an integrated with tone controls like Marantz or Cambridge, assuming that's high-end enough for you. You might also want to mount the speakers closer to the floor like on the Mapleshade stands, which will naturally reinforce the low end.

Give up the speakers, it is a lost cause. Move to a good set of headphones Unless you have a pre WWII apartment, you will never get the ability to listen at sound levels that make the hobby enjoyable. I do live in an apartment, but I listen during the day when all my neighbors are out working for the 'man'. Works out fine.

Excellent suggestion Dweller-

I will concur w/ the Thiel loudspeakers, either CS 1.7 or CS 2.4 will be plenty for an apartment system.

BAT, Rogue Audio or Creek integrated amps are on par w/ these speakers.

Cables/cords- AudioQuest, Wireworld, Straight Wire.
Keep me posted & Happy Listening!

best "bedroom" systems I had were:

Pathos Twin Towers mated with Vienna Acoustics Mozarts

Cary 300sei mated with ProAc 1sc

Source in both systems was a Naim CD3. Either set-up would be excellent in an apartment setting where you do not want to "shake the walls".

I also like Michael Green Design PZCs for room treatments ... they are some of the most visually acceptable I have seen

THE best low-volume speakers I have ever heard are the Totem
Dreamcatchers which go for about $400 on here.
Read the Stereophile review on them, it tells it like it is.