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The most common and traditional analog amplifier concept. This technology is still unbeatable when uncompromising sound quality is a must. Though Class AB amps generate more heat compared to digital amplifier concepts and therefore require larger heat sinks and higher supply currents they will be audiophile’s preferred choice. |
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This digital (switching) amplifier concept offers significantly better efficiency than Class AB amplifiers. Besides lower heat dissipation, Class D amplifiers require lower currents from the power supply which means less stress for the car’s battery / alternator system as well. Nevertheless, conventional Class D amps still do not achieve the excellent figures of the best Class AB designs in terms of THD, bandwidth and damping factor. |
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Audiotec Fischer´s proprietary Class GD concept takes the efficiency of conventional Class D amps to the next level. By varying the internal supply voltage in several steps depending on the amplifier’s input signals, idle losses are significantly reduced and overall efficiency is close to maximum at any time. So heat dissipation is almost negligible, thus allowing smallest heat sinks and most compact form factors. |
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The unique Class HD concept combines the advantages of a Class H technology with the principle of a class D amplifier. The result is an unsurpassed efficiency which easily outperforms any conventional Class D amplifier. By continuously varying the internal supply voltage depending on the amplifier’s amplitude of the input signals, idle losses are significantly reduced and overall efficiency is close to maximum at any time. |
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Compared to conventional Class D amps, this concept achieves an extended frequency response to more than 40 kHz in combination with reduced distortion thanks to an advanced integrated feedback design. Ultra HD Class D achieves outstanding, “Class AB-like” sound quality combined with the efficiency of a Class D amplifier.
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Highlevel speaker inputs for connecting factory radios or aftermarket radios without lowlevel line outputs.
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RCA / Cinch inputs for connecting signal sources, e.g. radios with pre-amplifier signals.
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Optical, digital stereo signal input in SPDIF format for connecting signal sources with a digital audio output.
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Electrical, digital signal input in SPDIF format for connecting signal sources with a digital audio output. |
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The HELIX Extension Card slot (HEC slot) allows adding further interfaces, such as a Bluetooth® Audio Streaming module or a High Resolution Audio USB soundcard. |
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The MATCH Extension Card slot (MEC slot) allows adding further interfaces, such as a Bluetooth® Audio Streaming module or a High Resolution Audio USB soundcard.
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Multi-functional connector for accessory products like a remote control which allows to adjust several features of the DSP / DSP amplifier.
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The HELIX Digital Input Module (HDM) slot allows extending amplifiers (depending on the amplifier model) with one or two optical digital inputs in SPDIF format including SPDIF Direc t In function. |
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Smart highlevel input ADEP.3 – Our latest version of our “Advanced Diagnostics Error Protection” circuit which can even handle the requirements of the latest generation of OEM car radios.
For the first time the circuit is also controlled by our integrated CoProcessor which allows to further interact with the diagnostic systems of modern radios.
Therefore the ADEP.3 ensures the best compatibility to most of all OE radios without loading the speaker outputs during high volumes unnecessarily.
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Smart highlevel input ADEP.2 – The latest generation of OE car radios incorporates sophisticated possibilities of diagnosing the connected speakers. If a common amplifier or signal processor will be hooked up, failure messages and loss of specific features (e.g. fader function) quite often appear.
Additionally, new power stage concepts in some radios may cause asymmetrical output signals which lead to distortion in the AD converters.
The ADEP.2 circuit avoids all these problems without loading the speaker outputs of the OE radio during high volumes unnecessarily.
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Smart highlevel input – The latest generation of OE car radios incorporates sophisticated possibilities of diagnosing the connected speakers. If a common amplifier will be installed, failure messages and loss of specific features (e.g. fader function) will be the result.
The ADEP circuit avoids all these problems without loading the speaker outputs of the OE radio during high volumes unnecessarily.
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The amplifier allows to change its operation mode from 1-channel mono mode to 2-channel stereo mode by removing a jumper inside the device.
Optical, digital stereo signal output in SPDIF format for connecting devices with digital input.
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Supports a lossless audio reproduction of High Resolution audio content.
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Advanced 32 Bit CoProcessor platform (ACO) for a bunch of new system and DSP features. For example the unique DSP sound effects (Augmented Bass Processing, StageXpander, RealCenter etc.), the speed advantages in data communication or the opportunity of software upgrades of all components of the DSP.
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Internal Audio-DSP that have been developed specifically for processing music signals and, thanks to their high resolution of 56 Bit, are much superior to conventional multimedia DSPs in terms of sound reproduction.
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Audio DSP with 64 Bit resolution inside. Complex filter settings may require more than 32 Bit word length in order to reliably avoid quantization distortion and noise. That’s why our DSP’s perform all calculations with the enormous resolution of 64 Bit, means acoustical artifacts will have no chance at all. |
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Two full 64 Bit DSP chipsets are used in this product to guarantee superior tuning capabilities. Doubling the processing power allows the implementation of a wide range input and output channels without losing the capability to process all singles in a native High Resolution audio bandwidth of 96 kHz / 32 Bit. The additional processing power ensures that also features like our “Virtual Channel Processing (VCP)” and “DSP Sound Effects (SFX)” are implemented as well. |
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The correct setting of the time delay between the individual speakers in the vehicle is essential for a perfect stage image. The conventional method of manually measuring the speaker distances to the ear often provides imprecise results, especially with passive 2-way or 3-way systems, as it is impossible to predict which of the speakers should be used as the reference for the "mechanical" measurement. Automatic Time Measurement (ATM) solves these problems in an elegant way. With the help of a measuring microphone (e.g. our MTK1) and a special measuring signal, it precisely determines the correct time delay for each individual channel. |
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In opposite to previous methods the Virtual Channel Processing (VCP) is a multi-stage signal processing concept that enables the perfect configuration of complex sound systems, opening up completely new possibilities for sound tuning. |
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1 to 1 channel routing option – As soon as a vehicle is already equipped with a premium sound system ex works, whose amplifier often already has more than 6 channels, e.g. Burmester or Bang & Olufsen, in many cases, a replacement is no longer possible. Only an amplifier with the same number of highlevel inputs can be considered for upgrading such a system. Therefore all Audiotec Fischer amplifiers with 1 to 1 channel routing option provide at least a minimum of 8 highlevel inputs and just as many amplifier channels. |
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This device supports Audiotec Fischers unique DSP sound algorithms like the “Augmented Bass Processing”, “StageXpander”, “RealCenter” etc. |
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he TwinPower Link allows to run two amplifiers of the same model in series which more than doubles the output power (depending on the speaker configuration). |
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The Regulated power supply assures a 100 % stable internal supply voltage independent of the battery voltage and output load which provides stable output power under all conceivable operating conditions. |
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The SMD manufacturing technology (Surface Mounted Device) combines minimum space requirement with maximum reliability. |
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Very compact design for smooth integration into the vehicle. |
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The device provides an integrated, active crossover with various filter configuration options. |
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The Auto Remote switch allows to activate or deactivate the amplifier´s / signal processor´s automatic turn-on feature via the highlevel input. |
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The device allows an easy installation via Plug & Play connection cable. |
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The device is compatible with a MATCH Plug & Play subwoofer. |
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Individual DSP configuration with the professional and very user-friendly Audiotec Fischer DSP PC-Tool software.
The DSP PC-Tool software with its numerous adjustment options allows an extremely precise sound tuning even under most demanding acoustical conditions.
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Vehicle-specific sound setups are available in our sound setup database for the configuration of the internal DSP. These are optimized for the perfect sound experience in the respective vehicle.
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This device is designed for use in cars with start / stop feature. Even during short voltage drops down to 6 Volts (e.g. while engine start) the functionality of the device remains stable and unaffected.
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The Power Save Mode allows to significantly reduce the power consumption of the amplifier and / or signal processor in modern OEM integration installations. The integrated and / or connected amplifiers will be shut off when no music signal is detected for a specific time. |
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The connection of an optionally available remote control is possible which allows to adjust several features of the device e.g. the subwoofer volume. |
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Remote control is included in delivery. |
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Quality Made in Germany. All products with the “Made in Germany” button are developed, manufactured and tested at our headquarters in Schmallenberg, Germany.
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