Boulder Amplifiers was founded in Boulder, Colorado in 1984 with a single governing principle: that the path to exceptional audio performance is not found in clever circuit shortcuts, but in the relentless elimination of every source of distortion and noise, regardless of cost or complexity. Forty years later, that principle remains unchanged. Boulder builds a small number of amplifiers each year — each one assembled by hand, measured individually, and shipped only when it meets standards that most amplifier designers would consider impossible to achieve in production.

ENGINEERING PHILOSOPHY

A Boulder amplifier is not designed around a price point. It is designed around a performance target, and then priced accordingly. The circuit topologies Boulder employs — including their proprietary 983 gain block, used across the reference product line — are evolved from decades of refinement rather than reinvented each product cycle. The result is electronics of extraordinary stability, vanishingly low distortion, and a sonic character that is best described as the complete absence of character: no warmth added, no edge softened, no signature imposed. Boulder amplifiers reveal what your source material and your speakers are actually doing — and they drive any load, at any listening level, without strain or compromise.

WHY THE AUDIO TAILOR CARRIES BOULDER AMPLIFIERS

We carry Boulder because our most serious clients eventually reach a point where they need amplification thatwill not be the limiting factor in their system — today, or in fifteen years. Boulder is that amplification. It is, in the truest sense, a final purchase.

Boulder 866 Integrated Amplifier

Introducing Boulder 866 Integrated Amplifier, a harmonious symphony of cutting-edge technology, ruthless power, and refined aesthetics. Embarking on an audacious journey to perfect one of the company’s most distinguished products, Boulder returns with an upgraded marvel that sculpts its own powerful narrative in the music universe. With an amplified power of 200W per channel, the 866 stands at the zenith of its kind, revolutionizing 'sound' like never before. What sets it apart is its meticulously designed lightweight model, making it an embodiment of sleek functionality. The product’s new circuitry allows you to savor boundless current output, even at maximum power, making this device a true champion in its category. Accommodating both vintage nostalgics and contemporary digital media enthusiasts, the 866 introduction comes with an additional version suitable for every listener. The centerpiece of this beauty? The dedicated Boulder app that allows you to guide your auditory journey with absolute ease. The Boulder 866 doesn’t just amplify sound; it amplifies experiences. Immerse yourself in a sound so potent, so clean, and so authentic, it transcends beyond just being mere 'sound'. It's an auditory journey that redefines your conception of music to paint an auditory masterpiece that is a faithful homage to the original recording. Savor the sheer force of a Boulder - indulge in an 866 and immerse in true sound perfection.

Features and Benefits

The Boulder 866 Integrated Amplifier pulls you into its world of crisp audio with an array of staggering benefits infused within striking features.

Two Variations: This product is designed to cater to everyone. The Boulder 866 comes in two different versions - all-analog for vintage sound admirers and analog+digital for those who love to stream their digital media.
Powerful Output: With an amplified power of 200W per channel, the Boulder 866 is capable of driving any loudspeaker load, promising superb dynamics and control.
In-built Touch Screen: The full-color touch screen on the Boulder 866 displays accessible inputs, set-up features, amplifier status, singularly enhancing your user interface experience.
Boulder Application: The dedicated Boulder app allows you to control your 866 amplifier, adjust custom setup and even add photos of your sources to the inputs shown on the 866's front panel. Add an optional RF remote for even more control.
In-house Manufacturing: Every part of the Boulder 866 is produced in Boulder’s dedicated facility. This means enhancements in manufacturing efficiency, making the 866 an incredible value compared to previous integrated amplifiers.
Enhanced Protection Circuitry: New protection circuitry ensures the 866 delivers more current at maximum output without the risk of damaging the amplifier's electronics, ensuring its longevity.
Multiple Digital Inputs: The digital version of the 866 has inputs for USB, Ethernet, AES3, and Toslink, plus Roon integration. These options seamlessly connect you to the world of digital media and streaming.
Assured Quality: Every circuit board and piece of metalwork in the 866 undergoes assembly and testing at Boulder's facility. This exhaustive quality assurance process ensures you receive nothing less than the best.
Superior Connections: Boulder’s traditional 0.25" (6 mm) thumbscrew binding posts offer secure speaker cable connections and optimal sound quality.
\nStreamlined Dimensions: Though an efficient powerhouse, the Boulder 866 holds a stylishly compact demeanor with dimensions measuring at 17" W x 15.4 D x 7.25” H.
Lightweight: The amplifier weighs only 54 lbs., making it easy to maneuver and perfectly appropriate for any home setup. Still, its performance outpaces systems twice its size.

The Boulder 866 Integrated Amplifier thus defies sound boundaries and invites you to feel the magic of ceaseless sonorous performance through its myriad features. It isn't a mere addition to your music world, but an upgrade you truly and thoroughly deserve. Immerse yourself in the rich depth of its audio landscape - it's more than just sound; it’s an experience. Your experience.

Specifications

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Specification	Description
Product Name	Boulder - 866 - Integrated Amplifier
Inputs	3 pairs balanced analog via 3-pin XLR
Digital Inputs	Ethernet, USB (x4), AES3, Toslink (optical), WiFi
Outputs	0.25" (6 mm) binding posts
Continuous Power	200W per channel (8 Ohms), 400W per channel (4 Ohms)
Peak Power	250W per channel (8 Ohms), 400W per channel (4 Ohms), 700W per channel (2 Ohms)
Distortion	Total Harmonic Distortion (THD): 0.01%
Equivalent Input Noise	2 μV (20 kHz)
Input Impedance	100k ohms, balanced
Maximum Analog Gain	40.4 dB
Frequency Response	20-20 kHz: 0.00, -0.04 dB, -3 dB: 0.015 Hz, 150 kHz
Power Requirements	100V, 120V, 240V, 50-60 Hz
Power Consumption	1000W maximum
Dimensions	17" W x 15.4 D x 7.25” H (44 cm W x 39 cm D x 19 cm H)
Weight	54 lbs. (24.5 kg)
Additional Features	Touch screen, dedicated Boulder app, analog+digital version, assembly and testing in-house, protection circuitry

In conclusion, the Boulder 866 Integrated Amplifier isn't merely an electronic device – it's an instrument that brings the grandeur of a live concert hall into your living room. Harnessing both strength and sophistication, it promises to elevate your auditory experiences to previously unattainable heights. An absolute must-have for the true audiophile, the Boulder 866 resonates with your music preferences, harmonizes with your home decor and rhythmically aligns with your lifestyle. Experience the magic of music in its most robust, captivating, and eloquent form. With its exquisite design and matchless performance, the Boulder 866 by The Audio Tailor remains unrivaled in its domain. It doesn't just play music, it brings compositions to life right in the comfort of your home. This is more than an amplifier - it's an invitation into an intense and immersive sonic world. Take a leap from the mundane to the extraordinary with the Boulder 866 Integrated Amplifier - a testament to exceptional sound and unparalleled ingenuity. Contact us today at The Audio Tailor, Australia’s top Hi-Fi store, and transform your audio experience forever.

Boulder - 866 - Integrated Amplifier