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IGS Audio 576 Blue Stripe 500-Series FET Compressor

IGS' recreation of the legendary UREI 1176 compressor with a painstakingly accurate input transformer that was at the heart of the original Blue Stripe's unique sound. Also includes a SLAM MODE, which...

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From IGS Audio

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.

DEVICE TYPE

Fet Compressor:Yes

BASIC FEATURES

Stereo Link: Yes (linkable in PSU)

INPUT & OUTPUT

Input Impedance (balanced): 2.4k

Output Impedance (balanced): 600 Ohm

Audio transformers: Yes, Carnhill on input and output

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

Ratio: 2:1, 4:1, 8:1, 12:1, 20:1, Slam (All in)

Attack: 20us - 800us

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

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$938