It's hilarious; if you're out creating and inventing doesn't matter what subject area, you will always run into somebody who is dissatisfied with their own life and is out to crap on your creativity. You sir are correct, it does exist, because I've created the only one ;)

From my perspective it looks like somebody actually in industry telling a delusional 'creative' type that they should have done better product research before declaring they had something new.

Here's a hint: Let's say we're both right, hypothetically - no other product does this! However, since there's nothing about the design that's intrinsically yours (IE - it's combining a few undergraduate EE course projects at once) somebody else will go make it in China as soon as you demonstrate that there's a market.

Unless, of course, you really have discovered some new area of AUDIO CIRCUIT DESIGN (just about the simplest shit there is, circuit-design wise). Not...very...likely...

Well then, it's a good thing your perspective doesn't matter to me, you've proven you don't have the faintest clue what you're talking about ;)