I have an Aries G1 running the 6.0 firmware and it does indeed have a 20 band parametric equaliser. This includes peak/dip, high pass, low pass, band pass and band stop functions. There also a speaker placement compensation function, which allows you to compensate for situations where the left and right speakers are not equidistant to your listening position.
The equaliser is structured very similarly to the one in Roon, which I have experimented with a fair bit. Surfice to say that it’s possible to manually adjust the band settings via trial and error listening and completely change the overall character of the sound. Doing it this way is not very scientific, but you might arrive at a sound you prefer given your particular room ‘issues’. While you can, to some extent, compensate for a rooms acoustic shortcomings by making manual adjustments in the parametric equalizer, ‘Room Correction’ is usually approached via the application of theoretical, scientifically derived correction algorithms, or sound measurement software.
The ‘classic’ approach to room correction, a la Linn for example, has been to focus on the low frequency end of the spectrum and apply a theoretical low frequency adjustment, simply based on the size, shape and building materials used in constructing the room. This has recently evolved to include adjustments for ambient room temperature, exact positioning for windows and doors etc, but ‘theoretical’ adjustments are applied in the same way.
Another approach is to use a microphone to measure sound at different points in the room and then process the readings with software tools, which can they apply corrections in specific frequency ranges to compensate for the rooms acoustic shortcomings.
This is all very clever stuff, and it can yield some very good results, but it’s probably best to start with ‘hardware’ verses software. By this I mean the actual physical layout of the room, distance of speakers from walls and corners, listening position, wall, floor and furniture treatments etc. To give you a couple of personal examples, I spent a lot of time fiddling with EQ filters and gain settings to overcome some high frequency harshness, only to eventually find that it was being caused because my speakers directly faced a picture window and high frequencies were being bounced back into the room and causing the distortion. drawing the curtains all but eliminated the problem, but that made it too dark during the day:slightly_smiling_face:, so I installed a drop down, translucent cellular, acoustic blind, that I could use during the day time. Similarly, the right hand speaker of my set up is very close to the curved side of a large piano. This again was causing some unwanted acoustic reflections, which I was able to control by draping a woolen throw over the offending side of the piano! I probably need a better long term fix, but it works for now!. There are of course many other wall, floor and ceiling solutions available. It just depends what’s causing your poor acoustics.
So, I guess you can us EQ to ‘compensate’ for these problems (and I certainly found it fun to experiment with it!), but in the long run, I think it’s best to start with trying to identify and ‘eliminate’ the source of the problem first. Right now I’m only using a very small low frequency roll off in EQ to compensate for a slight bass heaviness in my current speakers
Not sure if any of that helps, but in any case have fun with trying the EQ out!