IGS Audio ALTER 500-Series FET Compressor  From IGS

Single channel FET compressor inspired by the legendary UREI 1176 compressor from the 70s.

IGS Audio

$775.00

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Manufacturer's Description from IGS

The ALTER is a single-channel unit with stepped input and output controls. The Ratio switch has six positions, including two additional to the original 1176 1:1 and 2:1 settings. Slam Mode can be turned on with a separate switch, working regardless of the Ratio settings. Attack and release times can be set to Fast / Mid / Slow with 3-pole switches. The compressor is equipped with a relay bypass, achieved on the front panel. The input is balanced with a modern, low-noise op amp and the output with a Carnhill transformer. The circuit has two amp stages, between which is the output control. The stage amps are based on the discreet API2520 circuit. The level of gain reduction is shown by a 30 point led bar.

The ALTER 500 is a FET compressor built is the 500 standard. The FET-type solution was used for the first its application in the legendary UREI 1176 compressor from the 70s.

The ALTER is a single-channel unit with stepped input and output controls. The Ratio switch has six positions, including two additional to the original 1176 1:1 and 2:1 settings. Slam Mode can be turned on with a separate switch, working regardless of the Ratio settings. Attack and release times can be set to Fast / Mid / Slow with 3-pole switches. The compressor is equipped with a relay bypass, achieved on the front panel. The input is balanced with a modern, low-noise op amp and the output with a Carnhill transformer. The circuit has two amp stages, between which is the output control. The stage amps are based on the discreet API2520 circuit. The level of gain reduction is shown by a 30 point led bar.

Front panel Features:

  • Input - Input level and compression depth
  • Output - Output Level
  • Attack - Variable Attack - 3 ranges: 0.02, 0.2 and 0.8 ms.
  • Release – Amp recovery time to the value of 0.85 max. Range: 50ms, 600ms, 1.5 sec.
  • Ratio - compression ratio over the threshold response.
  • Ratio ranges: from 1:1 (line amp), through 4:1 (compressor) to 20:1 (limiter)7. SLAM - allows the enabling of All-Buttons-On - the "secret weapon" of any studio engineers ;)
  • COMP IN / OUT - Enable Bypass relay device
  • GR - very fast LED indicator showing the compression level in the range from 0 to 30dB.
IGS Audio

About Manufacturer

IGS Audio is now one the most desired studio equipment brands in Poland and it is continuously expanding internationally. The original IGS Audio products qualify as pretendants to no.1. Clones of other brands produced by Igs Audio are accurate and excellent. 

IGS Audio is all about happiness in success. IGS Audio offers 3 years warranty for all products.

IGS Studio has been operational since 1997. The IGS Audio brand was created in 2003.

Specifications

  • API 500 standard Module 
  • Input impedance: 1kOhm
  • Output impedance: 600Ω on Carnhill
  • Maximum input level: +20 dBu
  • Maximum Output Level: +22 dBm
  • Total Harmonic Distortion: 0.2%
  • Frequency response: +/- 0.1 dB 20Hz to 20kHz
  • Gain: 40dB- The signal to noise ratio: greater than 99 dB- Attack: 0.02, 0.2 to 0.8 ms
  • Release: 50ms, 600ms, 1.5 s
  • Power supply: + / - 16V
  • Dimensions: 132x37x158mm
  • Weight: 700g

Related Videos

Introduction to IGS Audio - Quick n’ Dirty

IGS Audio is now one the most desired studio equipment brands in Poland and it is continuously expanding internationally. With gear ranging from preamps to equalizers, IGS has everything a pro or amateur engineer could ever need. All IGS products are available for SoundPure’s Try-Before-You-Buy program, so if you want to hear how this great gear sounds in your studio with your gear, shoot us an email at ProAudio@SoundPure.com, or call us anytime at 919.682.5552. Thanks for watching!