If you have a little more time you can listen subconsciously. You just listen to music for fun, and you will notice things about the sound that annoy you, write them down. If it doesn't appear again then it's just you getting used to a change and the annoyance fades away with familiarity. If it gets worse and you start noticing it all the time and it doesn't eventually fade out then it's something to work on or upgrade.
If you listen excitedly to an upgrade for a day or two, then find you're not listening at all, have no desire to listen, then could be your change killed it and you need to put it back the way it was and try again.
Point being, if you tell your subconscious to tune the system, it will, by informing you of needed changes through feelings and noticing subtle things that you might not have heard before. In the end, it's the subconscious that listens and does everything anyway, it is what you're trying to "please." Music hastens alpha brain waves which open the door between conscious mind and subconscious which is where the creation of our lives happens. Listening to music isn't just for fun, although the action of creation is the funnest thing you can do.
Pleasuring up the sound with yummy distortion like tubes, paper cones, vinyl, transformers, etc allows the music to work that much more powerfully to induce alpha and even theta brainwaves, with practice, thus making imagination and prayer done during listening 1000 times more powerful in creating your world. Pay attention to the feelings and hunches you have about your system. Going for extreme detail and low distortion reinforces beta brainwaves, which pull you away from alpha. To each his own, we all use the stereo for different purpose. Some to get into alpha, some to avoid it. The room acoustic if understood and used to your advantage can beautify the sound to hasten and deepen trance alpha state. Read Floyd Toole's book before you go plastering the walls with FG to kill the beautiful reverb in the name of lowering distortion.
OmniMic is a nice and easy measuring system, with USB mic, software by Liberty Instruments (Bill Waslo) and support on PE forum and diyaudio.com for $300.