Wow! I went away for 10 days, and look what this forum has become. Great entertainment. Intrigue. Wire taps even!!
They see the whole elephant for what it is and consider each part and yes, as a business they price the product to fit their supply model (acceptable gross profit per unit x units sold given the demand and the competition) and hoped for return.
Thank you, William!!
As a designer and manufacturer, I don't dislike modders, but I wish that if they do want to modify my designs, please at least contact me. Sometimes, parts are picked for very good reasons - an example is the cotter pin analogy given by Amir.
There can definitely be ways to improve ANY design. However, frequently, designers are under time pressure (they have to release a design so that revenue can be generated to keep them in business), cannot change the designs once released (otherwise warranty and repair support is going to be a nightmare with every product produced being different), and are limited to the parts/suppliers they have on hand.
AVM does work - Winston uses it on his $150 CDs, and I believe that John Tucker uses it inside his Exemplar mods. But it can't be used willy-nilly like on those pictures that RUR posted. I have quite a lot of it (courtesy of Winston) when I was helping him develop a FIM power conditioner, but it was a nightmare trying to use it - too much and it dulls down the sound, and once you have put it on, it is very difficult to remove. So, to determine where and how much AVM to use, you have to make hundreds of prototypes, start applying AVM judiciously, and then when it has gone too far, take another prototype and apply the correct amount, and then find another place to apply more AVM.
I would NEVER put anything conductive (and there are 3 formulations of AVM, two of which are conductive!!) on the metal parts of electrolytic capacitors for obvious reasons.
If any one wants to have their CD/SACD/BD players modified, try John Tucker at Examplar Audio (disclaimer - John's local, and a friend although I don't own any of his products and he's a competitor). His work is good enough for Winston Ma, Bruce Brown and me.
Interestingly, referring to the pic, a lot of modifiers would insist that the coke can size big blue colored caps be replaced by a lot of smaller ones, or atleast they have convinced audiophiles in the past that it was needed. By doing so it is felt that it increases the speed of the amp a bit by offereing a lower power supply impedance.
Simply replacing a large "blue can" capacitor in the power supply with multiple small ones
might work well although that is not a given. The electrical model for a capacitor is:
Paralleling a bunch of them will increase the capacitance, reduce resistance and inductance. If that's what's required in the power supply, OK. Bringing inductance down too low will also increase surge into the power supply, and then you could burn out diodes, relays, blow fuses, etc.