Buy second hand, superior quality ,even more if from the 70´s it´s not that easy to find a perfect complete component system but i already bought very cheap,
a 1979 pioneer component system, (PL-400, SX-700L, CT-200, CS speakers 12" woofers),
a philips 1979 component system with a technics good turntable(SL-1310mk II with 205 X cartridge) and SB-F3 Technics speakers,
from the 80´s ,
a technics complete system,
a Dual audiophile concept ,not the cheapest components,
a Rotel complete system ,150€ .Only the integrated amplifier was sold on Ebay for 400€,
when i say complete, a amplifier integrated one or receiver, turntable with cartridge, cassette deck, speakers, in some 80´s systems includes cd player , on local advertising or OLX.
Neighboors?
To be or not to be a good one, there is the question as it is more expensive than the system to isolate a room,
i´ve done it with cork to isolate from my family as my neighboors are a bit far,
but it´s incredible we close the door and almost you can´t listen to sound this a less than half volume in a real 150 watts each channel integrated amplifier, i had to install a bulb that when the door bell ringued the bulb would be lighted in my room, or i wouldn´t listen if at home alone, my friends used to phone me.
To buy new?
Buy whatever you want and inside your budget,
and as speakers some litle Tannoy or JBL ,
and headphones to listen loud ,
Senheiser or whatever you prefer , i´ve heard some new JBL´s and were really good but the Senheiser i have, releases a lot more bass (still to find why one needs headphones pre-amplifier)