Your most indispensable "tweak"?

The Stein Music room in the Munich high-end show always soundS amazing.  But the do have some fantastic speakers.  I’d love to try their room treatments and 'harmonisers' one day. I did contact them and they were happy to supply things to try out.  I must get back on to that. 

@redwoodaudio 

There is a big thread on them here in the forum. 

Can you link to this thread please?  Search does nor find it. 

Tweaks that worked for me:
- Townshend seismic corners under the rack. These ‘float’ the whole rack and made a big difference
- cheap Granite slabs under speakers
- Isoacoustic Gaia feet under speakers
- CAD GC1 and GC3 passive grounding units
- a dedicated Hi-Fi ring from main fuse box- closing the curtains (eliminates reflections from the glass)

Tweaks that made NO difference to me:
- Isolation feet under individual components (and I tried three brands just to be sure) made no difference. Maybe because the whole rack is floated on Townshend seismic corners.
- power conditioning, even a top of the range £6k conditioner. It smoothed the sound but did not improve it.

@scothurwitz 

With regard to the isolation feet, which three brands did you try? 

I tried CMS and did exactly as you did and left them in for 2 weeks as my dealer said they would change over time and, as exactly as you said that they would get worse then better.  I heard no change at all over the two weeks. Nothing. I also tried Stillpoints and Ansuz.  I thought I heard something slightly better with the Stillpoint 6 under the CDP but  with some blind testing there was nothing. 

Funnily enough the conditioner I tested was the same as yours, Shunyata Denali v2 but as I say it did nothing but a little smoothing, which created a far less enjoyable sound.   I do have two Shunyata Alpha EF mains cables in my system on my amp and CDP and they are fantastic, a real game changing mains cable for me.  That and Townshend cabling in my system make a massive difference but I don’t count cabling as tweaking.