Photon 500

Sweet and classy.

The PHOTON 500 is an optical compressor, based on technology from the 60's, first used in the early LA-2A limiters and later in the LA4. As an homage to these legendary products, we packed this technology in a 500-series module. The PHOTON 500 uses an opto-coupler, which introduces negative feedback in the audio path, taking care of gain reduction, being the basics of all compression. The PHOTON 500 has an electronically balanced input with a 2520 compatible op-amp in the gain stage. The output is balanced by an IGS Custom made transformer.

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  4. Specification
  1. Device type
    Optical Compressor Yes
    Basic features
    All stepped manipulators Yes
    Sidechain HPF OFF, 60Hz, 120Hz
    Input & Output
    Input Impedance (balanced) 10k ohm
    Output Impedance (balanced) 600 ohm, Custom transformer
    Audio transformers Yes, IGS Custom
    Operating Level +4 dBu
    Max input level +20 dBu
    Max output level +22 dBu
    Noise Level -99 dBA
    Max. gain 30 dB
    Max Gain Reduction 20 dB
    Time constants
    Ratio 2:1, 4:1, 12:1
    Frequency response 8 Hz to 20 kHz, +/- 0.1dB
    Distortion (@ 20 Hz - 20 kHz)
    THD+N 0.012%
    Power consumption 2.5W
    Packing box
    Shipping weight 1kg
  2. Files
    IGS PHOTON500 user manual.pdf