576 Blue Stripe

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.

“true peak limiter with all transistor circuitry and superior performance on all types of material"

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.

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Specification

Device type
Fet Compressor	Yes

Basic features
Stereo Link	Yes, by jumper in the PSU.

Input & Output
Input Impedance (balanced)	2.4k, IGS Custom transformer
Output Impedance (balanced)	600 Ohm, IGS custom transformer
Audio transformers	Yes, IGS custom transformers

Levels
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

Time constants
Attack:	20us - 800us
Ratio	2:1, 4:1, 8:1, 12:1, 20:1, Slam (All in)
Release:	50ms - 1.1s

Bandwidth
Frequency response	8 Hz to 20 kHz, +/- 0.1dB

Distortion (@ 20 Hz - 20 kHz)
THD+N	0.014%

Power
Power consumption	2.5W

Packing box
Shipping weight	1kg

Files
576BS_Manual.pdf