Oddly, the best effect on many of my records using the Iconoclast from Mapleshaderecords.com or from tweakaudio.com
is to allow more more of the "you are there" virtual reality cues to be heard, not simply a pop and static control.
This is a competitor to the Zerostat gun.
I don't think this has been remarked upon by Ionoclast users, and perhaps is the result of decreasing the continuous barely audible distracting surface noise which the (superior :> analog) brains of vinyl lovers must otherwise learn to ignore during playback
For me, the Ionoclast subjectively increases the signal to noise ratio.