@hifiworld2024 oh if you have a subwoofer already then yes get the Perlisten and you're good to go.
The A21+ is incredible too so I think you're set in that section
Also yes Electrostatic speakers are akin to headphones... I'd rather headphones than such a Lazer focused dispersion pattern. No thank you on that.
And I'd rather you push the Perlisten as close to your front wall as possible before bending your speaker cables. Their roll off rate makes them front wall friendly. Do that so the integration with your subwoofer is fine