Moving Soon - Should I Pack Up Everything Now??

I agree with @bigtwin.  If you are going to be living there for a while, then leave the system set up so you can listen.  Mostly potential buyers want to be able to visualize what they would do with the various rooms in a house.  Your system does not clutter up the room and should not have a negative impact. 

If you are concerned from a security aspect with pictures of your system being posted in the listing, then buy some dark sheets and cover the speakers and components when the pictures are taken.  Open houses are another consideration.  Unplug your system, put the speaker grill covers on and, if you don't have speaker covers then, maybe buy a couple of heavy duty winter AC unit covers to put over the speakers.  You don't want somebody or their kid poking their finger through your drivers. 

At the very least, definitely put the grill covers on the Wilsons. If the speakers in any way protrude into a walking path, consider moving them closer together or closer to walls. Open houses can get busy, and there are often growing families where children are not always monitored. All it takes is one toy scraping on the side of your speakers to make you regret not packing them. 

I agree with others that a staged environment helps more than hurts, and your setup is fairly minimal and looks sophisticated. Little details like that gives prospective buyers a quality of your character, which adds to the confidence of buying the property. 

Best of luck!

Good Luck with selling your house.

Your level of equipment you own warrants being put away. You do not want pictures out there unless you are selling the equipment. I sold my home 2 years ago and thought I would wow people with my background music. I then opened up Pandora's box. Some people wanted it included with the sale. I also had a person who looked at the house call and wanted to know If he could come back and show his friend the system.

@zerofox As mentioned above, have some music playing softly.  A little Chet Baker perhaps.  I spent most of my life in sales and can tell you emotions play a huge part in the decisions.  You are trying to seduce the buyer.  Your system may be what makes your house memorable among many the buyer has seen.  Another trick is to have baked some bread just before people come over.  The smell stays in their minds and produces good feelings about the house.  The last time I had my house on the market, I would vacuum the carpets just before a showing.  Without fail, you could track the footprints right up to the front of the system.  People just love to look at something they have never owned and it sticks in their head.  Use it to your advantage.  A little "please do not touch" sign should be all you need.  Have a little faith that other adults will show some respect.  After all, these aren't people off the street and there should be a realtor with them.  Bast of luck with the sale.  

I wasn’t going to trust my babies to just anyone, so a few days before the movers came,  I rented a trailer and packed everything in it and a few other fragile items.  I left a receiver and some Yamaha speakers so I wouldn’t be without music.

All the best.