Cheap tweaks...What would YOU reccomend?

go to Home Depot and get those round forms used for pouring concrete columns. Place one in every corner. The 8" diameter form seems to work best (also come in 10" and 12"). They're four feet high and cost 5.95 each. If you want a fuller effect stack one on top of another so they reach the ceiling. Cover with the contac paper of your choice, cut out a top out of cardboard and place over the exposed end. You can also fill'em with cat litter or sand, but the cardboard is so dense I don't notice any appreciable difference. Caution: be prepared to fiddle with size vs placement. One corner might need 12", another 8". This is a good project for those of you who have no life whatsoever, but it will be worth the effort when you get it right.

Unplug all the components from your preamp, other than the one you are currently listening to. This will reduce rf and improve the sound.

Pretty much a freeby: Wrap your digital cable with about 7/8 layers of tinfoil.--Pull of the roll, the length of your cable.Lay the foil on the table--Then the cable; Roll and squeeze it tight. If it doesn't help you are out maybe 40cents. Look for mid range to upper mid-magic. The bass stays the same. This works on even 1k priced dig. links.

Treble Magic: Cup one hand behind each ear as you are listening. You will notice a substantial increase in volume and clarity of treble response. You can decide whether this provides additional clarity, or is instead a distortion.

I think for hands free operation; one could take an old pair of headphones/ place them behind the ears and then pull them forward till your ears flap forward???