I listen to a fair number of monitor speakers (Dynaudio, Focal, Neumann, ATC, JBL, Adam, Eve, Yamaha), both for my hobby (volunteer recording engineer assistant) and at home (I have 3 different pairs).
IMHO, not having read a review or heard the new P versions of the 7 series, there are a few features that make these a bit unique:
1. The wave guide. Yes, other monitors have waveguides but the measurements (and my personal experience with the 305s) lead me to believe the Harman version is currently a bit ahead in terms of what it does for their dispersion goals.
That is the impression that I've gotten from reading reviews of the 3 series and the m2. The idea of using the waveguide to allow for a more seamless transition at the crossover sounds interesting.
2. The compression drivers. I don't know of another monitor speaker at $999/each that includes a 0.5" compression driver.
I'll be interested to see what practical benefit it provides. Less compression of dynamics?
3. The multiple included EQ/DSP options. Genelec's new models do have a lot of customization here, but not at this price and, from the little I can tell, not as many choices.
How do you measure response in the room, analyze it, produce some parameters for the EQ/DSP options and get them into the monitors.
4. Size. The 705P is *tiny*. That should be good for reducing vibrations and diffraction.
Small enclosures are easier than bigger ones. That might have some effect on the huge price difference between the 705P and the 708P.
5. Inputs. The Neumann KH120D also has both analog XLR and digital BNC inputs, but they're $1249 each, don't go quite as deep, quite as loud, or have as many EQ options.