Troubleshooting

If you experience any problems with the unit, please take a moment to look through this chart and see if you can solve the problem yourself before you call your dealer or ESOTERIC customer service/ technical support.

Moreover, the problem might be caused by something other than this unit. Confirm that connected devices are also being used properly.

No power.

e Check the connection to the AC power source. Check and make sure the AC source is not a switched outlet and if it is, the switch is turned on. Make sure there is power to the AC outlet by plugging another item such as a lamp or a fan.

There is no sound or only a very low-level sound is heard. e Press the POWER button to turn the unit on.

e Check the operation of the preamplifier. When turning on the preamplifier, turn off the A-02 first.

e Check that the speakers, preamplifier and components are connected properly.

e Set the input and output setting of the preamplifier properly. e Check the connections of the preamplifier. Make sure that the

audio signal is output correctly.

e Check if the INPUT SELECTOR switch is set properly. e Adjust the preamplifier volume.

Indicator around the POWER button continues to blink blue. e The protection circuit is activated. There may be a ¥/^ short in

a speaker cable. Turn the unit off, and then check the cables.

Indicator around the POWER button continues to blink blue and purple.

e The protection circuit is activated. The temperature inside the unit may be too hot. Turn the unit off, and wait to let it cool down.

Sound is unstable.

e Check the polarity (¥/^) of the speaker cable. It may be reversed.

Since this device uses a microcontroller, external noise and other interference can cause the unit to malfunction. If this occurs, turn the power off and restart operations after waiting for about one minute.

Protection Circuit

This unit has a built-in protection circuit. This protection circuit consists of an output short-circuit protection circuit, an overcurrent protection circuit and a direct current protection circuit.

When the indicator around the POWER button continues to blink blue, there may be a ¥/^ short in a speaker cable. Turn the unit off, and then check the cables.

When the indicator around the POWER button continues to blink blue and purple, the temperature inside the unit may be too hot. Turn the unit off, and wait to let it cool down.

If the protection circuit continues to be activated, please contact your dealer or an authorized ESOTERIC service center.

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Esoteric A-02 owner manual Troubleshooting, Protection Circuit, No power, Sound is unstable
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A-02 specifications

Esoteric A-02 is a high-performance audio component that has garnered attention from audiophiles and music enthusiasts worldwide. This exquisite model, a part of Esoteric’s renowned lineup, exemplifies the brand's commitment to delivering unparalleled sound quality through innovative technology and superior craftsmanship.

One of the standout features of the A-02 is its powerful amplification capabilities. This component is designed to deliver a robust output, ensuring that even the most dynamic music passages are reproduced with precision and clarity. With a power output of 100 watts per channel into 8 ohms, it offers the necessary headroom to drive a wide range of speakers, maintaining fidelity even at higher volumes.

The architecture of the A-02 employs a balanced, fully differential design that minimizes distortions and noise while providing a wider dynamic range. This attention to signal integrity is crucial in achieving the best possible auditory experience. The use of premium components, including high-grade capacitors and resistors, further enhances the unit's overall performance, making it a true powerhouse in any high-fidelity setup.

Another impressive aspect of the A-02 is its exceptional build quality. Housed in a sturdy chassis, the design is not only aesthetically pleasing but also serves to reduce vibration and interference, factors that could negatively impact sound performance. The meticulous attention to detail in its construction reflects Esoteric's dedication to quality, resulting in a unit that is both visually striking and functionally superior.

In terms of connectivity, the Esoteric A-02 offers a range of options suitable for various audio setups. It comes equipped with both XLR and RCA inputs, allowing users to integrate it seamlessly into their existing systems. This flexibility is essential for audiophiles who demand versatility in their equipment.

Ultimately, the Esoteric A-02 is a convergence of innovative technology and refined craftsmanship. Its powerful amplification, balanced design, superior build quality, and versatile connectivity options make it a standout choice for those who seek an exceptional listening experience. Whether used in a dedicated audio system or as part of a multi-channel setup, the A-02 promises to elevate the way users experience their favorite music, ensuring that every note is delivered with clarity, depth, and emotional impact.
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