Cable Quality:

It has been our experience that you generally get what you pay for in cables. A good set of shielded input connection cables coupled with large gauge, high quality low-loss speaker wire is well worth the investment. Do not degrade the remarkable performance of this amplifier with inferior connecting cables.

The Marvelous Vacuum Tube:

Triode Vacuum Tubes were the first method of practical audio amplification patented in 1907 by Lee De Forest. At first, he used an open flame to produce thermionic emissions, but later found an electrically heated filament was much more practical.

The first triodes were quite inefficient and often very mismatched in performance. Thankfully we now have reliable sources of precision manufactured triode tubes, which are very consistent in quality and performance. Our proprietary Butler 300B directly heated power triode produces unmatched audio performance and reliability. It is a classic favorite among audiophiles the world-over. Thanks to the recent break-through of BK Butler’s thermionic patent, this wonderful tube can now be appreciated at elevated power levels unavailable with former conventional designs.

Over the years, BK Butler has experimented with virtually every type of audio vacuum tube. In 1992 he obtained a large Vacuum Tube Analyzer formerly used by the FAA to test and analyze radar tubes for aviation control towers. This old but very high-quality apparatus enabled him almost unlimited control to adjust and experiment with virtually every conceivable parameter of any tube. For example, input and output pins could be reassigned. B+ voltages and bias currents switched to any desired value or configuration. During these test, it was noted that a Phantom voltage was being generated.

It turned out to be nothing less than the original thermionic effect that one of Edison's assistant technicians (a Mr. Hammer) discovered in the late 1800's while testing early light bulbs. He noted a blue glow around the positive pole in a vacuum bulb and a blackening of the wire and the bulb at the negative pole. At first, this was referred to as "Hammers Phantom Shadow", but later Edison took credit for the discovery himself (as was his practice) and re dubbed it as "Thermionic Emission". More tests followed and soon the first vacuum tube diode was invented. Limited at first to rectifying AC into DC, Edison failed to make the one essential step needed for tubes to achieve useful amplification.

However, around 1906, Lee De Forest vastly improved the

2-electrode vacuum tube diode by adding the crucial element: a third electrode, or control grid. The rest is history. The successful invention of the amplifying vacuum tube triode, which could regulate the thermionic emissions of electrons from a heated cathode, became the foundation for our modern electronics industry.

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Butler Audio MONAD A100 manual Cable Quality, Marvelous Vacuum Tube
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MONAD A100 specifications

Butler Audio has made a significant impact in the world of high-fidelity audio equipment, and the MONAD A100 amplifier is a prime example of their dedication to delivering outstanding sound performance. Designed with both audiophiles and casual listeners in mind, the MONAD A100 combines innovative technologies and exquisite craftsmanship to create a truly remarkable listening experience.

The heart of the MONAD A100 lies in its unique hybrid design. It employs a combination of tube and solid-state technologies, harnessing the warmth and richness of vacuum tubes while providing the power and reliability of solid-state components. This synergy allows the amplifier to deliver exceptional sound quality, offering a dynamic range that captures the finest details in any musical performance.

One of the standout features of the MONAD A100 is its power output. With an impressive rating of 100 watts per channel into 8 ohms, the amplifier is capable of driving a wide range of loudspeakers, from efficient bookshelf models to demanding floor-standing designs. This versatility ensures that users can enjoy their music at any volume without compromising sound quality.

The MONAD A100 also incorporates advanced circuitry to minimize distortions and enhance the overall audio experience. It features high-quality capacitors and resistors, meticulously chosen for their performance characteristics. Additionally, the use of a low-negative feedback design helps preserve the integrity of the audio signal, resulting in a more natural and lifelike sound reproduction.

Connectivity is another strong suit of the MONAD A100. It comes equipped with multiple line-level inputs, making it compatible with a variety of sources, including CD players, digital audio players, and turntables. The amplifier also includes a robust output stage designed to deliver high current, ensuring optimal performance with even the most challenging speaker loads.

Aesthetically, the MONAD A100 is a harmonious blend of modern design and classic elegance. Its chassis is constructed from high-grade aluminum, with a stylish finish that complements any audio setup. The front panel features intuitive controls, allowing users to adjust settings effortlessly while providing a visually appealing interface.

In summary, the Butler Audio MONAD A100 amplifier exemplifies cutting-edge technology and impeccable design. With its hybrid tube and solid-state construction, substantial power output, advanced circuitry, and versatile connectivity options, it stands out as a premier choice for anyone seeking to elevate their audio experience. Whether you are listening to classical symphonies or contemporary rock, the MONAD A100 promises to deliver sound quality that is both rich and immersive.
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