IGS Audio 576 Blue Stripe
MPN #576 Blue Stripe
FET compressor in a 500-series module, relay bypass, 2:1 ratio, Slam Mode
The 576 Blue Stripe is a revised version of the classic FET compressor.
What it is
The FET-type solution was first used for its application in the legendary UREI 1176 compressor from the 70s. The most important feature inspired by revision A is the input transformer used and pure class A output stage. The compressor is equipped with a relay bypass, 2:1 Ratio and Slam Mode accessible on the front panel.
What it does
The 576 BS's major selling point is its ultra-fast attack time - 20 µS. The 576 BS Ratio buttons allow four different modes of operation: 2:1 Ratio (soft compression); 4:1 ratio (moderate compression); 8:1 ratio (severe compression); 12:1 ratio (mild limiting); 20:1 ratio (hard limiting); S - SLAM, All Buttons In trick mode.
SLAM Mode can definitely give a male or female rock vocal track an in-your-face sound that you can't get anywhere else.
Fet Compressor : Yes
Stereo Link : Yes, by jumper in the PSU.
INPUT & OUTPUT
Input Impedance (balanced) : 2.4k, Carnhill transformer
Output Impedance (balanced) : 600 Ohm, Carnhill transformer
Audio transformers : Yes, Carnhill on input and output
Operating Level : +4 dBu
Max input level : +20 dBu
Max output level : +22 dBu
Noise Level : -99 dBA
Max. gain : 36 dB
Max Gain Reduction : -20 dB
Ratio : 2:1, 4:1, 8:1, 12:1, 20:1, Slam (All in)
Attack : 20us - 800us
Release : 50ms - 1.1s
Frequency response : 8 Hz to 20 kHz, +/- 0.1dB
DISTORTION (@ 20 HZ - 20 KHZ)
THD+N : 0.014%
Power consumption : 2.5W
Shipping weight : 1kg
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