What commerical audio system tweaks provide sound quality improvement??


If you look in any audio catalogue, whether Music Direct or Audio Advisor, there are usually several pages of  system tweaks.

What  tweaks in your opinion, work and actually provide real audible improvement??

Thank you , SJ

sunnyjim
Clean all of your cable terminations, including power cords with a good cleaner of your choice.

Let’s not forget to clean all non-audio connections and outlets, too. In every room, too. You know, computer, fridge, TV, floor lamps, you name it. Good Housekeeping 101.

@geoffkait  

Make sure you turn off the power at the breaker box before you clean the outlets. PLEASE !

 
terry9
@geoffkait

Make sure you turn off the power at the breaker box before you clean the outlets. PLEASE !

I never turned off the power prior to cleaning outlets and am fine. I mean except for a slight twitch. :-) Do not clean both HOT and NEUTRAL simultaneously. PLEASE !

 
toddverrone
Physics definitely supports vibration control. Particularly for tube components and turntables.

Physics also supports vibration control for solid state components.

toddverrone
Some tweaks, though.. Jeez. I can’t believe people purchase these things. They make some of the stuff the new agers buy look like quantum physics.

Care to give some examples of these tweaks you can't believe people purchase?