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NAD 940 BluOS 4 Channel Power Amplifier Black (Each)
NAD 940 BluOS 4 Channel Power Amplifier Black (Each)
NAD 940 BluOS 4 Channel Power Amplifier Black (Each)
NAD 940 BluOS 4 Channel Power Amplifier Black (Each)

NAD CI 940 4 Channel Power Amplifier Black (Each)


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The CI 940 is a high-performance four-channel amplification for custom installation and distributed audio systems. With multiple discrete high-power output devices in the component, it can easily provide instantaneous peak current required for good bass response.


Reliability, flexibility, and ease of installation of the CI 940 is unsurpassed. Its design is space-efficient and will fit into standard racking units with rack ears and Phoenix speaker connection blocks. The amplifier is fully protected from short circuit and overheating, and automatically restores operation after a condition is rectified. The CI 940 is incredibly flexible, with selectable local or global inputs and the ability to bridge channels to create a single high-power channel.


Choose between a DC trigger or a signal-sensing turn on with auto shut-off to make integration easy. The signal sensing circuit employs a sophisticated music sensing circuit to prevent the false triggers common with noisy source components or other types of interference noise like RF leakage or ground loops.


  • 35 watts x 4 channels into 8 ohms (20-20,000 Hz) at 0.03% THD
  • bridged mode output is 70 watts x 2 channels into 8 ohms (20-20,000 Hz) at 0.02% THD
  • perfect for bi-amping stereo speakers, adding surround channels to a home theater system, or powering music zones in a multi-room audio system
  • 4-ohm stable for use with a wide range of speakers
  • Class AB amplifier with multiple discrete high-power output devices for high-quality sound and powerful bass
  • signal-to-noise ratio: 95 dB
  • 12-volt trigger/signal-sensing auto-on with auto shut-off
  • custom toroidal power transformer for low noise and high damping factor
  • two pairs of RCA preamp inputs let you play separate stereo sources in two zones
  • line-level ""loop through"" outputs
  • removable Phoenix-style speaker connectors for easier installation
  • detachable power cord
  • dual thermostat-controlled cooling fans
  • rack mountable (brackets included)
  • less than 0.5 watt standby power consumption
  • 19-1/16""W x 4-3/16""H x 12-3/4""D
  • weight: 15.35 lbs.
  • warranty: 2 years

What's in the Box:

  • 4-Channel power amplifier
  • 6' AC power cord
  • 2 Phoenix-style connector blocks
  • 2 Rack ears (installed w/ 8 screws)
  • 2 End-caps
  • Quick Setup Guide
  • Warranty Card
Continuous Output Power  
                         8 Ohms/4 Ohms 4 x 35W (ref. rated THD, 20Hz-20Hz, all channels driven)
                         8 Ohms Brigde Mode 2 x 70W
Rated THD (250mW to rated power, CCIF IMD, DIM 100) ≤0.03% (ref. 20Hz-20kHz)
                                     4 Ohms 85W
                                     2 Ohms 95W
Damping Factor >180 (ref. 8 Ohms, 50Hz and 1kHz)
Input Sensativity 270mV (ref. rated power)
Voltage Gain 35dB
Frequency Response ±0.2dB (ref. 20Hz-20kHz), -3dB at 3Hz and 100kHz
Signal/Noise Ratio, A-Weighted >95dBA (ref. 1W), >110dB (ref. 35W)
Trigger 5-30V In (AC/DC), -52dBV, 12V Out
Time to Automatic Standby (without signal at input sense mode) <10 minutes
Rated Power 270W (120V 60Hz, 230V 50Hz)
Idle Power <55W
Standby Power <0.5W
Dimensions (W x H x D) 483x105x323mm
Net Weight 6.96kg
Shipping Weight 8.4kg

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