Is $2,844 too much to pay for a fuse?

, if one inch of hair thin cheap wire does not degrade sound quality then why waste money on good wire anywhere?

cheap has nothing to do with it, that is hyperbole for dramatic effect

in order for it to work the fuse has to have a certain amount of resistance. The energy flowing through it would not heat it up if it did not so it would never blow. So any fuse is going to consist of a "thin wire" of some length. Unequivocally stating that this will degrade the sound might seem like a logical conclusion, but without some kind of proof it is a mere guess.

And the speaker cable analogy makes no sense and is irrelevant because what is a small amount of resistance in an inch of wire would be too much  resistance in many feet of the same wire

these produce a more efficient flow of electrons which allows for greater conductivity. Also, according to Tsang, "the QSA technology removes Bottle-neck Distortions (BND), while independent studies have shown that our fuse technology improves the performance 70 to 80%, while the aftermarket AC power cord is only 20 to 30%

Let's look at the facts.

• Electrons don't "flow". 
• He made up BND.  
• I bet if asked he can't produce any "independent studies" and even if he could it is impossible to measure  a % of improvement.

if everything he claims is BS you figure it out