Yesterday I had the occasion to listen to the 30.7 at a friend's home. Amps were Aesthetix Atlas, source was Aesthetix Romulus.
Frankly, I had expected more, given the hefty price tag (about 100 k-Euros) attached to the system. Some stuff like guitar ensembles (Friedemann "Saitensprung") or Church organ with choir and female singer (Marianne Mellnas "Julsang") was very pleasing, but the system failed on stuff like deep bass (Rio Amazonas by Oystein Sevag & Lakki Patey) and the electronic (?) drum in Sting's "A thousand years". Pogressive rock/metal with heavy guitars, mixed with very litte to no dynamic range (Ayreon, Universal migrator) was equally disappointing, when comparing to my system where the drum and Ayreon are much more powerful, and the Rio Amazonas bass more solid and pronounced. The Magnepan/Aesthetix did produce these sounds, but with someone pulling on the brake cable.
They also failed on the LEDR's Up and Lateral test signals.
My 2 cents,
Klaus