The 576 Blue Stripe is a revised version of the classic FET compressor.
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.
“true peak limiter with all transistor circuitry and superior performance on all types of material"
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.
|Stereo Link||Yes, by jumper in the PSU.|
|Input & Output|
|Input Impedance (balanced)||2.4k, Carnhill transformer|
|Output Impedance (balanced)||600 Ohm, IGS custom transformer|
|Audio transformers||Yes, IGS custom transformers|
|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|
|Attack:||20us - 800us|
|Ratio||2:1, 4:1, 8:1, 12:1, 20:1, Slam (All in)|
|Release:||50ms - 1.1s|
|Frequency response||8 Hz to 20 kHz, +/- 0.1dB|
|Distortion (@ 20 Hz - 20 kHz)|
© 2015 IGS Audio