Universal Audio 1176LN Limiting Amplifier

The original Universal Audio 1176LN designed by Bill Putnam was a major breakthrough in limiter technology – the first true peak limiter with all transistor circuitry offering superior performance and a signature sound. Evolved from the popular Universal Audio 175 and 176 vacuum tube limiters, the 1176LN retained the proven qualities of these industry leaders, and set the standard for all limiters to follow.

Today, the 1176LN is new again. While it certainly would have been possible – and much simpler – to modernize and "improve" the 1176LN, every effort was made to remain faithful to Putnam’s design and intentions. Carefully trained staff hand-wire and test each unit until it meets our uncompromising standards. This Universal Audio Classic version of the 1176LN captures all the nuance of the original through obsessive attention to detail and delivers that trademark sound. Demand the original. Accept no copies.

• True to the original in design, manufacturing and performance • Modeled after 1176LN, blackface, D and E revisions • F.E.T. gain reduction • Pushbutton selection of compression ratios, 4:1 8:1, 12:1, 20:1 • Ultra fast attack time – 20 microseconds to 800 microseconds • Adjustable release time – 50 milliseconds to 1.1 second • Class A line level output amplifier • Custom built Putnam-designed output transformer • Stereo interconnect operation • Contemporary styling and eye pleasing industrial design



INPUT IMPEDANCE: 600 ohms, bridges-T control (floating OUTPUT LOAD IMPEDANCE: 600 ohms, floating, damping factor 20 EXTERNAL CONNECTIONS: Jones Barrier terminals and XLR connectors FREQUENCY RESPONSE: ± 1 dB 20 Hz to 20kHz GAIN: 50 dB DISTORTION: Less than 0.5% total harmonic distortion from 50 Hz to 15 kHz with limiting SIGNAL TO NOISE RATIO: Greater than 70 dB at +10 dBm ATTACK TIME: 20 microseconds to 800 microseconds RELEASE TIME: 50 milliseconds to 1.1 seconds THRESHOLD VS OUTPUT LEVEL: COMPRESSION RATIO INPUT LEVEL AT ±2 DB RELATIVE OUTPUT 20:1 -25 dBm +13 dBm 12:1 -26 dBm +12 dBm 8:1 -27 dBm +11 dBm 4:1 -32 dBm +6 dBm

STEREO INTERCONNECTION: via 1176 SA Network accessory POWER REQUIREMENTS: 120/240 V ENVIRONMENTAL: Maximum operating temperature 160°F DIMENSIONS: 19" Rackmount chassis, 2U WEIGHT: 11 lbs.

The 1176SA™ calibrates two mono 1176s for stereo operation.

The 1176SA was first offered for the original 1176, but has become increasingly difficult to find for use with either vintage or new 1176s. Due to customer demand for stereo operation, we carefully recreated the original adapter. The 1176SA is a small device (4.25" x2.5" x1.75") which rests behind the 1176s. The 1176SA sports a full metal enclosure for proper shielding, gold-plated connectors. A 2-year battery is included. The 1176SA is compatible with both new and vintage models.