Edited 05 Jan 2022: New Burson Conductor 3XP DAC/AMP changed the sound profile and got rid of some of the sibilances on the highs (but not all) while decreasing the overall bass for a more balanced profile. This makes the headphones an overall smoother listen than my Schiit did. I also have no issues with the bass and sibilance on a portable Fiio FC3 DAC for some reason, so it may be source dependent. I’ve tried the GHJM with both cables and the rougher highs (Across the Burren is painful)/boosted lows persist on a desktop amp. These work great for me as a portable solution, but not a desktop headphone. I have a pair of the JM Audio XTC-Closed (XTC-C) on the way, I will update with how those sound vs these.
I’ve had the Kennerton Gjallarhorn GH 50 JM Edition v2 (GHJM) for a little while now and I finally have the chance to write a review. These are the Blue Stabilized Maple version that you can’t even get directly from Kennerton as far as I can tell. The Baltic Sea version is more Blue/Green and are a lighter color than the dark blue of the stabilized maple. You can also only buy the Gjallarhorn GH 50 JM Edition v1 from Kennerton. The v2 edition must be sent to JM (@John Massaria) to get him to install the JM Proprietary Fractal Fiberglass Mesh Technology (TM) and some different sets of earpads. I am also using his balanced JM Audio 4-pin XLR cable, which provides great sound and is EASILY driven from my Schiit at ¼ power. From the cable, they receive power and conversion from a Schiit Bifrost 2/64 DAC and a Jotunheim 2 amp (both excellent Schiit btw). They are being sourced through my desktop PC with a Moon Audio Silver Dragon (what a waste of money) cable pulling from Tidal Hifi Plus. I picked these up directly from John, to replace my Focal Celestee (which my wife stole and won’t give back) as a closed-back set to compliment my Rosson RAD-0. I will be comparing these to the RAD-0, Focal Utopia, and Hifiman HE-1000 v2 (HEKv2) as well.
