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.
Device type | |
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Optical Compressor | Yes |
Basic features | |
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All stepped manipulators | Yes |
Sidechain HPF | OFF, 60Hz, 120Hz |
Input & Output | |
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Input Impedance (balanced) | 10k ohm |
Output Impedance (balanced) | 600 ohm, Custom transformer |
Audio transformers | Yes, IGS Custom |
Levels | |
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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 | |
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Ratio | 2:1, 4:1, 12:1 |
Bandwidth | |
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Frequency response | 8 Hz to 20 kHz, +/- 0.1dB |
Distortion (@ 20 Hz - 20 kHz) | |
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THD+N | 0.012% |
Power | |
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Power consumption | 2.5W |
Packing box | |
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Shipping weight | 1kg |
Files |
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IGS PHOTON500 user manual.pdf |
© 2015 IGS Audio