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Boulder 860 Stereo Power Amplifier

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BOULDER 860 Stereo Power Amplifier

Over the past 25 years, Boulder Amplifiers has evolved from a manufacturer of state-of-the-art professional studio equipment to become the premier manufacturer of high performance home entertainment electronics in North America. With the release of the 860 Stereo Amplifier, we have completed a lineup of power amplifiers unrivaled anywhere in the world.

Based on the technology developed for Boulder's 1000 and 2000 Series, the 860's linear output section channels 150 watts of stable, high-current power into any load to reveal all of the force, delicacy, and texture hidden in your music collection. The 860 offers a peerless list of design and engineering features: a muscular linear power supply with a massive toroidal transformer for powerful and instantaneous energy transfer. A pair of XLR inputs leading to a full-balanced, differential, three-stage input circuit to pass the audio signal from source to amplifier free of distortion and noise. Rugged binding posts to provide tight, low-impedance contacts.

Manufacturer's Website BOULDER



Boulder 860 Specifications:

 Two-channel, solid-state, remote-controlled power amplifier. Inputs: two balanced (XLRs). Outputs: two pairs of ¼" thumbscrew terminals, 12V trigger. Maximum output power: 150Wpc (continuous) into 8 ohms (21.8dBW), 300Wpc (peak) into 4 ohms. Voltage gain: 26dB. Input impedance: 50k ohms balanced, 25k ohms unbalanced. S/N Ratio: 108dB (unweighted, 20Hz–22kHz, no reference given). THD: 0.0035%, 20Hz–2kHz; 0.018% at 20kHz. Channel separation: >112dB.
Dimensions: 17" (435mm) W by 7.38" (190mm) H by 15.25" (390mm) D. Weight: 45 lbs (20.5kg) net, 56 lbs (25.5kg) shipping.


Please find reviews below:

" ULTRA Audio " Online Magazine Review