1161

Stereo Power Amplifier

At long last, there is a solution for listeners with smaller living spaces or more efficient systems but the need for a truly high-performance amplifier. There are systems and locations where larger amps simply don’t fit or more powerful options are unnecessary. Here’s your answer: The 1161 was developed as a smaller, less powerful alternative that sacrifices absolutely nothing in terms of performance. The dynamics, the control, the delicacy, the resolution–everything is still there. There are no sonic drawbacks. It has the same operational feature set as its larger brother, the 1160, and yet it’s packaged in a chassis the that’s same width and depth as the 1110 Preamplifier. So you see, it is possible to have everything, even with less.

Features

  • 200W peak power per channel into 8 ohms, 350W peak power into 4 ohms, 450W peak power into 2 ohms

  • Space saving design is the same footprint (width and depth) as the 1110 preamplifier and lower power output allows use of a standard power cord

  • Smaller size carton packaging means easier transportation, unpacking, and installation

  • Truly balanced input connections and output stage as with other 1100 Series products

  • Newly developed protection circuitry safely and immediately shuts down the output section in case of shorted speaker cables or faults in the system

  • Superior signal handling and resolution achieved using Boulder's own 985 initial gain stage as used in the larger 1160 Stereo Amplifier

  • Revised and redesigned automatic biasing circuit accurately stabilizes bias to eliminate the need for manual calibration

  • Complete smart-home and integration compatibility with 12V trigger, IP control, and networked HTML page

  • Software updates to the internal control and housekeeping systems available as needed with automated online downloads or manual USB port installation

Specs

1161
Stereo Power Amplifier
  • Continuous Power; 8, 4, 2 Ohms

    150w

  • Peak Power, 8 Ohms

    200W

  • Peak Power, 4 Ohms

    350W

  • Peak Power, 2 Ohms

    450W

  • THD, 8 Ohms, 150W

    0.003%, 20 kHz: 0.01%

  • THD, 4 Ohms, 150W

    0.004%, 20 kHz: 0.015%

  • THD, 2 Ohms, 150W

    0.005%, 20 kHz: 0.025%

  • Equivalent Input Noise (EIN), 20 kHz, BW

    1.5 μV

  • Magnitude Response, 20 Hz TO 20 kHz

    +0.00, -0.04 dB

  • Magnitude Response, -3 dB at

    0.015 Hz, 150 kHz

  • Voltage Gain

    26 dB

  • Input Impedance

    Balanced: 200k ohms,
    Unbalanced: 100k ohms

  • Common Mode Rejection (Balanced Only)

    60 Hz: 90 dB, 10 kHz: 70 dB

  • Crosstalk, L to R or R to L

    -100 dB or better, 20 Hz to
    20 kHz

  • Input Connectors

    3-pin balanced XLR

  • Output Connectors

    Two sets of 6 mm / .250-inch wingscrews

  • Weight

    Amplifier: 54 lbs. (24.5 kg)
    Shipping: 64 lbs. (29.0 kg)

  • Power Requirements

    100, 110-120, 220-240 VAC, 50-60 Hz

  • Power Consumption

    15W standby, 100W nominal, 1000W at maximum output