" the best Tweak ever in the entire audio industry"

Yeah, I saw that video a coupla days ago. I gotta find out if my digital player (an Esoteric) has opamps that can be replaced with those in the video.

I put in the ss2590 and was very pleased with the results. I agree with Danny that this may have been the best tweak I've ever done.

Results are mixed.  Judge for yourself.

https://www.youtube.com/watch?v=nrqVYE4_v1M&t=128s

What am I missing? Didn’t that video make pretty much the same statement about the Sparkos as Danny? Listening to a YouTube video through headphones is not the way to discern for yourself what something really sounds like.  That said, I could tell the difference between them and the Sparkos sounded just like the description from both the video and Danny.