I did an extensive review of the The Kennerton Gjallarhorn VS The Kennerton Magni- but all of that is out the window since I modified my - Gjallarhorn. This new review will show you what I did and what impact it had on the sound. I can briefly say- these are now the best sounding headphones I have ever put over my ears period ever. That includes all IEMs. The only thing I can say comes close is perfect sounding Kinoshita 4V large monitors mounted in 8 tons of poured concrete which I have listened to in a recording studio on Long Island called Music Palace (The Mix Palace) . This studio has a 12 strand solid copper ground that goes over 100ft into the ground. The transformer was a custom design for the electric company speced by the recording owner himself. All the electrical wire is on one side of building to include lights etc, and the audio wire is on the other intersecting at right angles where necessary. For me to tell you these headphones sound as good as this studio is a statement I do not make lightly. I personally own Vandersteen Speakers, and Magnepan 3.6r with sound anchors, one of my closest friends has Perfect Eight The Force - and I can say his system is the pinnacle of insane perfection- and these headphones sound nearly as good. Let the review continue of these modfified horn headphones that may just change the industry as we know it.