What's inside? My friend tells me it's this...
Simple high pass filter with audio quality AVX capacitors.
Metal film resistors to a copper contact jack
Silver solder and brilliance wire from the cable for the hookup.
Apart from that, it's really no one's business where I buy anything. I said a friend made it for me at cost, and that should be enough. Really not concerned with what answer you expected, to be honest.
I saw you made a statement about LODs, which I then decided to investigate further, since while I owned one, I was not a heavy user to that point (for convenience sake). Now, since you posted, I am a believer. Checked it out with my own ears. Found I was missing something.
I guess to be a disbeliever, or on the flip side, a believer, you'll have to try it yourself, since it is really the only way to offer an opinion on the matter. Right?
That was quite an unpleasant response.
Is there a reason for the secrecy and the unpleasantness?