First of all I should say thanks to Tweek Geek for their speedy and professional order processing. Second, on the Bybee Internal Quantum Signal Enhancer, this was a real holy shit moment for me. I simply couldn't expect this level of impact from what are basically magical refrigerator magnets. I purchased four. I placed one under the hood of my Manley Chinook phono preamp, and the other three on the inside of the door to my breaker switch panel. I'm blown away every time I sit down to listen. There really is no "darkness" about it in my system. Nothing to get used to except for explosive dynamics and a seemingly louder (at lower volumes) all-tube system, complete with micro and macro details that would be difficult to describe here. I can say that for the $600 I paid the audio improvement was not at all subtle, immediately noticeable and worth every penny. I don't know if I need more, but I am a fan of tweeks that actually work. These work.

Tweek Geek is good to do business with.