Boulder 1160 Stereo Power Amp

The art of technological progress, beautifully expressed in the art of visual design, in an amplifier of truly remarkable ability. Let us present to you the Boulder 1160 Stereo Power Amplifier, recognized by media and editors in the US, Taiwan, France, China, England, Japan, Poland, Hong Kong, and Italy with eleven awards for exceptional ability. Awe-inspiring and modern, yet staying true to Boulder’s long-standing guiding principle: maximize performance. Every circuit has been refined and every mechanical detail has been optimized. Everything about the 1160 is executed to a spectacularly high standard. As a result, it is exactly what you would expect: brilliant.

Features

300 watts of output power can drive any reasonable loudspeaker to realistic levels

Machined front panel depicts the topography of Flagstaff Mountain near Boulder, Colorado

Improved thermal management reduces temperature while operating

Ethernet-enabled supervisor circuitry monitors amp, protection systems, and IP and HTML control

New grounding system and fully-balanced circuit design improve clarity and reduce distortion

Robust output section using 56 output transistors means excellent reliability, control, and power with any loudspeaker

Dual power transformers are DC filtered and enclosed a welded steel case for perfectly silent operation

Boulder Net control access connects to networked systems & integrated homes and links the 1160 with other Boulder products

Boulder’s 983 gain stage combines discrete and monolithic design for excellent sound quality

Specs

1160 Stereo Power Amplifier
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 Hz 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

Crosstalk, L to R or R to L

Greater than 120 dB

Input Connectors

3-pin balanced XLR

Output Connectors

Two sets of 6 mm / .250-inch wingscrews

Weight

Amplifier: 135 lbs. (61.2 kg)
Shipping: 215 lbs. (97.5 kg)

Power Requirements

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

Power Consumption

15W standby, 240W nominal, 3600W at maximum output