New room needs new speakers, I need your help

Hello everyone!

I have a new house and a new acoustically treated room, but it is very small: we are talking roughly 12' by 16'.

I use a pair of Dali Euphonia MS4 and I feel they need a bigger room to shine, the volume I need for them to sound full is just too much for my modest room. I really enjoy accurate timbres and I need a beautiful midrange and midbass, I listen mostly to women vocals and jazz.

I am looking for a pair of speakers that will cost me a maximum of 5K on the used market.

I am very sensitive to fatiguing treble, I don't look for absolute treble clarity, I love an easy listening speaker.

My ideal speaker would be the PMC IB2SE which I auditioned extensively, but sadly it is out of my budget.

I am open to your suggestions!

Rest of the system is

Sony Ps-X9 turntable on a  Sutherland Phono

Analogue Audio Maestron Anniversary integrated amplifier

Lampizator DAC

Wattson Digital Streamer

Muon Filter

Silent Angel switch

All Luna Mauve Cables

Everything but the amplifier pluggeg in Plixir