246810
25 - 35 years on those speakers?
Routine changes aren't your bag apparently. Good for you.
Stan's notes are right on. Figure out what sound you want and proceed prudently along those lines.
With a record player as source, I'd say tubes somewhere are going to suit you, whether or not you add a CDP to the mix or not.
You did not say another source piece was on the list, so Ill assume not.
Another take on the 'buy a stereo' idea is to put more $$$ into the front end than into the speakers alone.
Both ideas work and I suspect the 'get better speakers' first camp are all about making improvements upstream thereafter.
if it's all about the original quality of that signal, and I think it is, one needs a great source, very good amplification, and THEN, great speakers. Not the other way 'round. IMHO.
I feel what will very likely happen now with a much fresher amp, better wires, and new speakers, or even preowned units, your source is going to be shown for its true self and noticeably so. IOW more revealing gear will reveal more of the signal that TT is putting out!
Id rethink the budgetary allocations myself. Shifting just $1,000 from the speaker budget onto the power train, if not a bit more, will be a better solution in the long run. if the remaining $3K is spent on preowned speakers, the signal sent to them from a good preowned $2500 int will be better noticeably.
Perhaps still better would be placing 3K each into power and speakers with the balance sent towards maybe another TT and cabling. Some excellent speakers are out there for $3K and its a whole other world for ints when you hit the $3K class.
If it were me, thats what Id do 3K into the power, and 3K into the transducers. One grand into another source or what ever. Merely pay attention to the power needs of the speakers being considered, and theres scads of speakers, certainly more than there are amps!
I wont say which power or speakers though, as that will depend upon individual tastes and room size. So do get out and listen to some setups, and if possible, take some home for brief trials. BTW some online dealers offer just such things.
and it really is all about the signal being generated always. Whether one builds a rig from front to back or back to front.