©2021 by IronAgeAudioworks
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Overview
The Iron Age 500 series H9 module was designed as a tribute to famous British consoles of the
early 70s. The mic preamp and EQ combine for an instantly recognizable character, and are all
around useful tools in tracking or mixdown.
Each H9 features a discrete class A mic pre that offers 0 to 70 dB of gain in 10 dB steps. In mic
mode the signal starts with a Jensen input transformer. In line, a true-to-history unbalanced
input is available at +10, 0 and -10 dB gain. The preamp stage feeds a discrete high pass filter
set for 80Hz, followed by the classic three band passive EQ. A second gain stage acts as
makeup gain for the EQ, and a discrete class A buffer drives the line out. 48V phantom power
is available in mic mode only.
As with all Iron Age products, the H9 is as discrete as possible, designed and made in the USA.
Block Diagram
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