Cheap tweaks...What would YOU reccomend?

I accidentally found this on my decent preamp, I was trying to use 2 "Y" connectors from my CD player to connect 1 set of interconnects to preamp "TAPE", second set to a HT receiver, but instead I hooked it into preamp "AUX1".
(I was in the process of doing it and got interrupted with something else for couple days).

When turn on preamp with BOTH "TAPE" AND "AUX1" on, the sound is .. drasmatically changed, with unbelievable detail, image, even loudness.

Just about to post as question if this is a mistake, but I enjoy it so much that I decide to keep it this way, maybe until something ... explode !

I've been very impressed with those ultralight Neuance shelves under my CDPs (made a HUGE difference under the Rotel, and a more subtle improvement in coherence with my 44lb EMC-1 MkII). Far greater bass articulation and PRAT than inner tubes.
Also, the LAST thing you want to put under your speakers is an air cushion! Spikes, rollerblocks, THIN sorbo between
satellite/base sections are all great, but the object is to optimize the coupling to the floor...not isolate it (as you would do with other components...especially front end ones).
Have fun! Ern

I just push those spikes firmly, straight into my wood floor, finish be damned. Sounds good to me.

Forgot to mention this "cheap tweak". I have had a problem with the noise from a nearby restaurant, so I bought two $40 sheets of soundproofing foam. I tacked it into my window and it helped a bit. Well I had a 5' X 3' piece left over, and wasn't sure if I should get rid of it or not, so I leaned it against a console table, right where my first reflections are, and Voila! every word became easily intelligible. I bet you can all guess what came next. I went back to the store, bought another piece, and now things are much improved. Vocals and movie dialogue are much easier to decipher. Looks ugly though, so I guess I'll buy some audiophile grade fabric to cover it and give it a makeover. Anybody know where to get some?

The Bedini cd demagnetizer / clarifier. For less than 100.00 bucks and 20 second spin on your faroritre cd, it sounds like a 3,000 system upgrade, no kidding.