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Universal Audio 1176LN Classic Limiting Amplifier

The 1176LN is Universal Audio's continuing production of the Class A FET limiting amplifier that has been on drum, bass and vocal tracks since the late 1960s. It is modeled on the 1176LN Blackface, D and E revisions, with a custom Putnam-designed output transformer and a Class A line-level output amplifier.

Attack runs from 20 microseconds to 800 microseconds and release from 50 milliseconds to 1.1 seconds, which is where the aggressive, fast-clamping character comes from. Two units interconnect for stereo through the 1176 SA network accessory, and the unit is hand-built in the USA with a one-year limited warranty.

TypeClass A FET limiting amplifier
Input Impedance600 ohms, bridges-T control (floating)
Output Load Impedance600 ohms, floating, damping factor 20
Frequency Response+/- 1 dB, 20 Hz to 20 kHz
Gain50 dB
Attack Time20 microseconds to 800 microseconds
Release Time50 milliseconds to 1.1 seconds
DistortionLess than 0.5% THD, 50 Hz to 15 kHz with limiting
How the 610 Preamp, LA-2A and 1176 Compressors Revolutionized Recording