BOULDER 1160 stereo power amplifier 

Specifications:

CONTINUOUS POWER; 8, 4, 2 OHMS - 300W

PEAK POWER, 8 OHMS - 300W

PEAK POWER, 4 OHMS - 600W

PEAK POWER, 2 OHMS - 1200W

THD, 8 OHMS, 300W - 20-2 kHz: 0.0009%, 20 kHz: 0.0048%

THD, 4 OHMS, 300W - 20-2 kHz: 0.0016%, 20 kHz: 0.0071%

THD, 2 OHMS, 300W - 20-2 kHz: 0.002%, 20 kHz: 0.0130%

EQUIVALENT INPUT NOISE (EIN), 20 KHZ BW - 1.5 μV

MAGNITUDE RESPONSE, 20 TO 20 KHZ - +0.00, -0.04 dB

MAGNITUDE RESPONSE, -3 DB AT - 0.015 Hz, 150 kHz

VOLTAGE GAIN - 26 dB

SIGNAL TO NOISE RATIO (RE: 300W/8Ω) - -127 dB, unweighted, 20 to 22 kHz

INPUT IMPEDANCE - Balanced: 100k ohms,  Unbalanced: 50k ohms

COMMON MODE REJECTION (BALANCED ONLY) - 60 Hz: 90 dB, 10 kHz: 70 dB

INPUT CONNECTORS - 3-pin balanced XLR

OUTPUT CONNECTORS - Two sets of 6 mm / .250-inch wingscrews

CROSSTALK, L TO R OR R TO L - Greater than 120 dB

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

POWER CONSUMPTION - 15W standby, 240W nominal, 3600W at maximum output

WEIGHT - Amplifier: 140 lbs. (63.5 kg),  Shipping: 220 lbs. (99.8 kg)