BOULDER 1161 stereo power amplifier 

Specifications:

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

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

POWER CONSUMPTION - 15W standby, 100W nominal, 1000W at maximum output

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