Some questions about Kharma Exquisite Reference

I'm interested to buy a pair of Exquisite Reference 1E speakers. However,the size of my audio room is just about 7M * 4M * 3.2M or 23'*13'*10'(L/W/H). I wonder whether the space is a serious problem for Exquisite Reference or not?

Can you elaborate some amplifiers which are the right one for Exquisite Reference 1E? What's their sound? Can Tenor 150Hps, LAMM ML2, VIOLA Symphony, PASS XA160 or DarTzeel NHB-108 be good choices?

The differences of performance between Exquisite Reference 1A and 1E are significant? I saw Exquisite Reference 1D-E in the internet, what does 1D-E mean? What's the difference between 1D and 1E?

Any comments are very welcome. I'm eager to know the answers. Thank you for kind help!