Tweaks, money pit or real value?

Thanks very much fleschler your posts are always interesting i must say...

just a precision about that :

The hallographs are necessary not as a diffuser but as a focusing device-the Legacy Focus speakers tend to be narrow in soundstage and imaging. The Hallographs permit adjustable wider seating with enhanced ambiance.

What you described is precisely the effect of my grid of Helmoltz diffusers which are also of different length and diameter and are analog in a way to quadratic diffuser but being open/semi-open tubes they can work anywhere in the room and not only on walls...This is very important ......They diffuse at some spot in a better way than at some other spot in the room, it is reason why a diffuser ,must be well located to make possible a better "focus" on the sound imaging and also more importantly an INCLUSION of the listener in the soundscape...This is called LEV/ASW factor ratio in psycho-acoustic...I have diffusers near my listening position and inside the speakers themselves and over them 😁😊...

i will never compared my modest system to your costly one, but like you said even a modest system can do miracles... The only difference, if there is one between us, is that for me it is acoustic and psycho acoustic control the main factors....Not the gear choice by itself alone....And acoustic MAY cost peanuts...I dont need bass trap in my 13 feet non ideal square room with one speakers at few inches of a corner... Is it a worst location than that ? All my acoutical devices are used also  to compensate or nullifiy the bad location of my speakers among others role ...I succeed and discover that some bad locations of the speakers can be taken care of and are only location difficult to play with acoustically and not absolutely bad ...if it is possible for me anybody can do it... 

I am not an acoustician at all , i only take a set of non stop listening experiments for a very long time in months each day in my room creating homemade necessary devices... 😁😊

Acoustic is the way for me...

My deepest respect to you...

Thanks for all your answers...

The hobby in general is a money pit, but tweaks from big names generally are the worst. My idea is look on the used market and see which item loses it most value when going to try and sell it later. Those are what I consider the biggest money pits. The bottom line is, if you love what it does then who cares if it is a money pit or even viewed as snake oil, embrace it and enjoy it!

Resist! Get a $$back guarantee! Believing is hearing! Cables do matter, especially USB ones. What seems obvious in a hotel room may no do the same thn in your house. By great recordings of "your kind" of music. Enjoy

Someone explain to me the science behind speaker wire elevation devises.

@bsmith it makes cleaning dust bunnies much easier.

If you are looking for science call Bill Nye LOL

static electricity from carpet and sometimes polyurethane flooring, home wiring attached to bottom of flooring...and it’s Free and easy to clean...so even if it doesn’t work there are benefits...not sure if this is science

Ear buds are the best tweaks you can apply to any audio system. Instanly improves the sound quality and cost less than a dollar.