Studio d'enregistrement situé à Oakland, USA. Ce studio fut géré par le producteur et ingénieur du son Zack Ohren.
Le studio se nomme maintenant Hellam Sound et est géré par Aaron Hellam.
Castle Ultimate Studios
Recorded albums

A Sun That Never Sets
Solaromancy
All Shall Perish
Awaken the Dreamers
All Shall Perish
This Is Where It Ends
Arkaik
Metamorphignition
Arsonists Get All The Girls
Listen to the Color
Brain Drill
Apocalyptic Feasting
Brain Drill
Quantum Catastrophe
Conducting From The Grave
Conducting from the Grave
Conducting From The Grave
Revenants
Conducting From The Grave
When Legends Become Dust/The Hypothesis/The Hypothesis.jpg)
Continuum (USA-3)
The Hypothesis
Cyanic
Litanies of Lust Unholy
Fallujah
Nomadic
Held In Scorn
Rusted Gates EP
Held In Scorn
Self-Titled
Leaders
Now We Are Free
Light This City
Facing the Thousand
Light This City
Remains of the Gods
Light This City
Stormchaser
Light This City
The Hero Cycle
Luck Won't Save You
Waiting... The Anticipation Game
Molotov Solution
Molotov Solution
Obastra
Obastra
Obastra
The Day the Star Fell/Called to Rise/Called to Rise.jpg)
Oblivion (USA-4)
Called to Rise
Odious Mortem
Cryptic Implosion
Omnihility
Deathscapes of the Subconscious
Reciprocal
New Order of the Ages
Son Of Aurelius
The Farthest Reaches
Strength In Numbers
Demo
Viraemia
Viraemia
Wastewalker
Funeral Winds/Heathen [Remastered]_6224.jpg)