Boulder Amplifiers 101 XLR Unbalanced Output Cable Termination, Power Supply Connections

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Cable Termination Diagrams

HOT

2

1

GND

SHIELD

3

(OPEN)

Figure 1. XLR UNBALANCED OUTPUT CABLE TERMINATION

PREAMP END

TIP

RING

SLEEVE

HOT

GND SHIELD

RING IS OPEN

Figure 2. TRS UNBALANCED OUTPUT CABLE TERMINATION

POWER SUPPLY CONNECTIONS

A 2.1mm jack is used for the DC power input of the 101. The polarity of the jack is positive in the center and ground on the outside.

Included with your Model 101 is an AC adapter rated for 6VDC @ 800mA.

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Contents Model101 Page Model 101 Features Front Panel Controls Connecting the Preamplifier Audio ConnectionsPower Supply Connections XLR Unbalanced Output Cable TerminationSetting the Gain OperationModel 101 Specifications 75Hz High Pass Filter Response

101 specifications

Boulder Amplifiers has established itself as a leader in the premium audio amplifier market, renowned for its commitment to excellence in sound quality and innovative technology. Founded in Boulder, Colorado, the brand’s philosophy revolves around the idea that high-fidelity audio is paramount, and this is meticulously reflected in their amplifiers.

One of the standout features of Boulder Amplifiers is their fully balanced architecture. This design reduces noise and distortion, ensuring that the audio signal remains pure throughout the amplification process. The balanced circuit topology minimizes the impact of external interference, leading to a cleaner, more accurate sound reproduction, which is vital for audiophiles seeking the best listening experience.

Additionally, Boulder amplifiers boast exceptional power output and efficiency. Many of their models are capable of delivering high wattage ratings while maintaining low distortion levels. This means that they can drive even the most demanding speakers without compromising on sound quality. The amplifiers typically feature high current outputs that enable them to handle dynamic musical passages with grace, providing a robust performance across all types of music genres.

Another distinguishing characteristic is the use of premium components. Boulder Amplifiers utilizes meticulously selected capacitors, resistors, and transistors designed for superior performance. This attention to detail not only enhances reliability but also contributes to the amplifiers’ longevity and consistent sound quality over time.

The integration of advanced thermal management systems is also prevalent in Boulder’s designs. These systems ensure that the amplifiers operate under optimal temperature conditions, which is critical to maintaining sound integrity and protecting internal components from overheating.

Boulder’s commitment to craftsmanship is evident, as many of their products are handcrafted to ensure the highest standards of quality. The aesthetic appeal of the amplifiers is equally impressive; their sleek and minimalist designs exude sophistication, making them an attractive addition to any audio setup.

In terms of user experience, Boulder Amplifiers are built with intuitiveness in mind. Many models feature easy-to-read displays and straightforward controls, allowing users to focus on enjoying the music rather than navigating complex settings.

Ultimately, Boulder Amplifiers represent the pinnacle of audio engineering, combining cutting-edge technology with exceptional craftsmanship to deliver an unparalleled listening experience. Whether for a dedicated audiophile or a music lover seeking the best sound, Boulder Amplifiers set a standard in the high-end audio market that continues to inspire.