SPL Starts Shipping IRON Mastering Compressor

The newest SPL member in the 120V mastering series, the IRON mastering compressor is now available in stores.

The goal of the company was to conceive a compressor that provided a pleasant, melodic-sounding, transparent compression, inspired on the vintage compressors of the radio era. And it had to be versatile enough to adapt perfectly to the needs of modern mastering studios. Thus, the IRON combines not only the sonic virtues of legendary vintage tube compressors with the advantages of the High Dynamic 120V operating voltage in a single unit. It also sets a new benchmark in terms of tube compressor technology, with the innovative implementation of a parallel dual-tube circuit

SPL’s IRON mastering compressor is available in black (Model 1520) and red (Model 1524)

Apart from the color, both models share the exact same technical specs:

  • Variable-bias tube compressor
  • Parallel dual-tube circuit
  • Tubes are selected and matched using a PC measuring system especially developed for the IRON
  • Custom-made Mu-Metal iron transformers
  • Feed-forward resistive opto-isolator in the control path of the variable-bias tube circuit
  • Six different rectifier settings
  • Sidechain with bypass, four EQ presets for the internal or an external sidechain signal
  • All functions can be adjusted via buttons or detented potentiometers
  • Stereo Link mode to control the Threshold, Tube Bias, Attack, Release, Rectifier, and Sidechain EQs with the right side (channel 2) of the unit
  • Passive 120V equalizer with two presets for the output signal
  • High-dynamic 120V operating voltage
  • Made in Germany

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