I have for sale an IGS One LA 500 series compressor in excellent condition. Lightly used and sounds amazing—one of the better LA2A style compressors out there in any format

The IGS ONE LA 500-Series Compressor offers two knobs of happiness! It is the first high voltage vacuum tube 500 series module that is offered by IGS. The IGS ONE LA 500-Series Compressor is powered with 250V DC from an on-board voltage converter, so it can be plugged into any 500 series rack equipped with a standard power supply. Every single IGS ONE LA is hand made with high quality, matched components (1% metal film resistors, Wima caps). It is equipped with JJ tubes and individually calibrated to give you the unique and unspoiled experience of one of the best opto-compressors in the history - the Teletronix '68 LA-2A. The IGS Audio has spent hundreds of hours designing the ONE LA, to make sure that it is as simple to use as it is versatile. Not only for harmonically rich vocals and strings, but also for huge and beefy drums and bass instruments. Using two IGS ONE LA 500-Series Compressor as a stereo pair will allow you to use it as an excellent bus compressor!

There is Something Else
Three audio transformers (Sowter and Edcor in audio path and OEP in sidechain) have been used to provide excellent performance and with only two knobs and a single compressor/limiter switch, there is nothing that could go wrong. Additionally, you can replace the photocell easily.

IGS ONE LA 500-Series Compressor Applications

• Recording vocals
• Strings
• Bass instruments
• Bus compressor (stereo when two units are being used)

IGS ONE LA 500-Series Compressor Features

• 500-Series double module, mono unit
• Original Teletronix '68 audio path
• JJ ECC83 input and JJ ECC82 output tubes
• Tubes powered by 250V DC
• Sowter input transformer
• Edcor output transformer
• OEP sidechain transformer
• T4B replaceable photocell (for special order)
• Potentiometer manipulators
• Hard wired bypass
• Compressor/Limiter mode
• Large VU meter with LED back light

IGS ONE LA 500-Series Compressor Specifications

• Device Type:
• • Optical Compressor:Yes
• Basic Features:
• • Stereo Link: Yes
  • Hard Wire Bypass:Yes
• Input & Output:
• • Input Impedance (Balanced): 600 Ohm
  • Output Impedance (Balanced): 600 Ohm
  • Audio Transformers:Yes, Carnhill, Sowter, Edcor (Sidechain)
• Levels:
• • Operating Level: +4 dBu
  • Max Input Level: +20 dBu
  • Max Output Level: +21 dBu
  • Dynamic Range: 100 dB
  • Noise Level: -99 dBA
  • Max. Gain: 32 dB
  • Max Gain Reduction:32dB
• Time Constants:
• • Ratio: 4:1 in COMP Mode, 100:1 in LIM Mode
  • Attack: 1ms
  • Release: 0.5 - 5s (50% @ 60ms)
• Bandwidth:
• • Frequency Response:8 Hz - 20k Hz, +/- 1 dB
  • Distortion: (@ 20 Hz - 20 kHz)
  • THD+N: 0.002% @ 0dBu
• Front Panel:
• • VU Meters: Yes, GR (Backlit)
• Power:
• • Voltage: API Standard, Internal DC-DC Conversion for Powering Tubes (250V DC)
  • Power Consumption:8W
• Packing Box:
• • Shipping Weight: 6.61 lbs
• Others:
• • Tube Set: ECC82, ECC83