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Analogue Domain is a German Brand created by Angel Despotov that goes to the limits for the best adio reproduction.
The amplifiers in the DX9 range share the same basic circuit topology. Common elements are the input, output, drive, protection and control circuits. Differences are in the power supply, output stage configurations and rated power.
All DX9 amplifiers feature exclusively discrete components in the signal path, arranged in high-performance proprietary circuits. We avoid using operational amplifiers, as they limit the dynamic range and often impose an undesirable "sonic signature".
The chassis parts of the amplifiers in DX9 range are machined from solid blocks of aluminum to exacting specifications. When assembled, the chassis is virtually airtight.
The DX9 range is built around our proprietary DX901 hybrid chip, featuring the DXDrive™. It provides the driving signals and control functions in the power stages.
The DX901 is a custom IC, featuring premium discrete components on a high-performance ceramic substrate. Component location on the chip has been optimized through nine revisions to achieve a very low distortion figure, a wide dynamic range, and sustainable high performance at any output level. The low noise floor provides a near 'black' background for enhanced resolution at low levels.
The input stage is an ultra-linear zero-feedback discrete complimentary unity-gain buffer. It provides standard input impedance and acts as a low impedance signal source for the power stages. Signal selection between the balanced XLR and the unbalanced RCA inputs is done with a dedicated relay featuring gold-plated silver contacts in a sealed case. The input stage includes a high-performance limiter. It will engage only in case of an overload, transparently limiting overdrive, consequent clipping and distortion.
Power amplification stage
The DX9 range amplifiers are fully symmetrical, bridged configurations. This setup provides a further reduction of distortion while maximizing dynamics. Each amplifier contains two identical power stages operating in inverse phase. The outputs are massively parallel, built with hand-matched ultra linear audio-grade power transistors. All devices are operated well within their linear region to ensure low distortion and high reliability. The term "difficult load" has no practical meaning.
Massive, in-house designed, custom-built toroidal mains transformers are used in all our amplifiers. Filtering and energy storage is provided by long-life, high performance capacitors. The power block of the Apollo, Athene and Artemis supplies several voltages to the power stages to ensure both a high power output and a high efficiency factor. In conjunction with the DXDrive™, this setup has enabled us to build extremely powerful, yet relatively compact and energy efficient amplifiers with uncompromised performance and reliability. The Calysto is a classic design, powered by a fixed voltage for ultimate fidelity.
Our amps feature an extensive array of protection circuits to guarantee safe and reliable operation. Considerable effort has been made to ensure that these circuits engage only in exceptional circumstances and do not interfere under normal conditions.
Possible error states fall into two categories: self-resetting and non-resetting. An example of a self-resetting error state is overheating, which would cause either a temporary reduction in output power or complete muting, depending on actual heatsink temperature, to prevent irreversible damage. The amp will automatically resume normal operation when the temperature falls to a safe level. A non-resetting error will require manual intervention to draw attention to a serious error condition that should be rectified. An example is a short circuit at the output. Such events will force the amplifier into standby.
All amplifiers are protected against mains over/under-voltage, overheating, input signal overdrive, output short-circuit, DC voltage at output, excessive HF/RF. Current draw during initial power-up is limited by a dedicated 'soft start' circuit.
Our products are designed and manufactured in Germany to the highest quality standards. However, should something go wrong with any of our products, Analog Domain Audio GmbH will do whatever it takes to repair and restore the product to its original specifications in a reasonable time. If the problem is attributable to workmanship or defects in materials, we will provide free of charge labor and replacement parts worldwide. This limited warranty is valid for a period of ten years from the date of original purchase.
Terms and Conditions
1. The warranty is limited to the repair of the equipment. Neither transportation, nor any other costs, nor any risk for removal, transportation and installation of products is covered by the warranty.
2. The warranty is transferable.
3. The warranty will not be applicable:
* For damages caused by incorrect installation, connection or packing,
* For damages caused by any use other than correct use described in the user manual, negligence, modifications, or use of parts that are not made or authorized by Analog Domain Audio GmbH,
* For damages caused by faulty or unsuitable ancillary equipment, or by an unsuitable power supply,
* For damages caused by accidents, lightning, water, chemicals, fire heat, war, public disturbances or any other cause beyond the reasonable control of Analog Domain Audio GmbH and its authorized partners,
* For products whose serial number has been altered, deleted, removed or made illegible,
* If repairs or modifications that have been executed by an unauthorized person.
4. This guarantee complements any national/regional law obligations and does not affect your statutory rights as a customer.
How to claim repairs under warranty:
Should service be required, please contact the party from whom the product was purchased or Analog Domain Audio GmbH.
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