This listing is for a IGS Audio Photon optical compressor. There are two of them available. These are rare original units with the Carnhill transformers, the newly manufactured units no longer have Carnhills. In perfect working order and excellent cosmetic condition. They will be carefully packed with plenty of foam and air cushioning.

DESCRIPTION

The IGS Photon 500-Series Compressor is an optical compressor, based on technology from the 60's, first used in the UREI LA-2A limiter and later in the LA4. As an homage to these legendary products, IGS packed this technology in a 500-series module for compressing instruments such as guitars, bass, synths and more.

The IGS Photon 500-Series Compressor 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 has an electronically balanced input with 2520 compatible op-amp in the gain stage. The output is balanced by a Carnhill transformer.

IGS Photon 500-Series Compressor Features

• 500-Series mono module
• All stepped manipulators
• Precise LED bar scale
• Carnhill output transformer

IGS Photon 500-Series Compressor Specifications

• 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
  • Audio Transformers: Yes, Carnhill
• Levels:
• • 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
• Bandwidth:
• • Fequency Response: 8 Hz to 20 kHz, +/- 0.1dB
• Distortion (@ 20 Hz - 20 kHz):
• • THD+N: 0.012%
• Power:
• • Power Consumption: 2.5W