For me it was easy math. Too many folks have reported audible musical and/or sleep enhancements to discount them all as quacks. I ignore most of the more idiotic tweaks and snake oil products sold in the audio domain. And most of those are a bit more than $10 each, so I'll take my chances on the SR units.
And if I don't hear an improvement (even after weeks) the tweak is gone. No pixie dust to change my brain and perception. I like blind and double-blind testing at times, which scares the crap out of the guys who cannot readily identify changes if they don't know the gear being used (funny). But I also do a lot of long term testing on any changes, days or weeks at a time; I think that 'living with' testing has a place.
With the obscene amount of money spent on connecting wires/cables I have no qualms dropping a few bucks on a tweak that may well offer audibly discernible improvements. As for those who have never heard one, for good or bad; they really have no useful input for this discussion as I see it.
And if I don't hear an improvement (even after weeks) the tweak is gone. No pixie dust to change my brain and perception. I like blind and double-blind testing at times, which scares the crap out of the guys who cannot readily identify changes if they don't know the gear being used (funny). But I also do a lot of long term testing on any changes, days or weeks at a time; I think that 'living with' testing has a place.
With the obscene amount of money spent on connecting wires/cables I have no qualms dropping a few bucks on a tweak that may well offer audibly discernible improvements. As for those who have never heard one, for good or bad; they really have no useful input for this discussion as I see it.

