Iron is a modern “Vari-Mu” tube compressor, built for mastering and bus compression, with a beautiful musical sound and incredible options for color. The Iron set a new benchmark by taking the sonic virtues of legendary vintage tube compressors and adding on modern innovations, including a parallel dual tube circuit, rectifier mode switching, flexible attack and release settings, and a High Dynamic 120V operating voltage. Unlike traditional Vari-Mu designs, which use a single tube for compression, Iron employs a unique dual circuit topology. A specially designed Mu-Metal iron transformer splits the signal between two distinctly different tubes—a 12AX7/ECC83 and a 12AU7/ECC82—each with a slightly different compression curve and feel. These two separate tube compression circuits are run in parallel, and then recombined to taste for a uniquely flexible approach to tube compression.
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