Boulder has released the first model in its new 1100 Series mid-level product line-up, the 1160 stereo power amplifier.

Boulder says the new 1100 Series models will offer substantial advancements over the previous 1000 Series thanks to the increased use of surface-mount technology, and will be manufactured on Boulder’s own surface-mount manufacturing machines and ovens. ‘SMT yields improvements in noise radiation, propagation delay, parasitic capacitance and the elimination of lead inductance, plus offers improvements in unit-to-unit quality and consistency and long-term reliability,’ said Rich Maez of Boulder.

Also new on the Boulder 1160 is that Boulder is using a 64-bit, multi-core ARM processor to monitor and control the amplifier’s various protection circuits, which include a.c. mains power monitoring, thermal detection and over-current detection. The ARM processor also links to the internet, and so enables the use of Boulder Net, an IP-based unit-to-unit detection, system layout, and communication architecture available to external control systems such as Savant or Crestron and application-based system controls. It also means that an HTML setup and control page for the 1160 can be accessed remotely simply by logging into the amplifier’s IP address via a browser.

The Boulder 1160 is rated with a continuous power output of 300-watts per channel, which it can deliver into 8Ω, 4Ω and 2Ω loads. To do this, each channel has 28 bipolar transistors, 24 capacitors and one toroidal power transformer. All audio circuitry is full differentially balanced and the outputs include dual connections for bi-wiring. ‘Boulder’s new 1100 Series combines new technology and exceptional performance with reduced size, power and cost,’ said Boris Granovsky, of Absolute HiEnd, which distributes Boulder in Australia. ‘The improvements in ground paths, noise floor, and circuit layout have also delivered a noticeable improvement in sound quality.’ Available now, the Boulder 1160 stereo power amplifier retails for $42,500.


Manufacturer’s Specifications: Boulder 1160 Stereo Power Amplifier
Power Output: 300-watts per channel into 8Ω
THD: 0.0009%
Frequency Response: 0.015Hz–150kHz –3dB
Gain: 26dB
Signal-to-Noise Ratio: 127dB unweighted
Channel Separation: 120dB
Weight: 63.5kg
Power Consumption: 15/3600W (Stdby/Max)
Warranty: Two Years
Price: $42,500

For further information, please contact Absolute HiEnd