Brax RX2 Pro Amplifier - Analog In Black

Brax RX2 Pro Amplifier - Analog In Black

Although digital signal processing with the legendary BRAX DSP has long entered the world of BRAX, analog power amplifiers have remained the benchmark for the highest possible sound quality and best parameters. With the BRAX REVELATION RX2 PRO, however, a new era begins - as the name suggests: A new digital revelation of sound that eclipses everything previously known in the car audio segment.

Heinz Fischer: "As a passionate musician with over 45 years of success in the audio industry, I never imagined that Class D technology could ever compete with analog techniques. But I must express something very clearly: The BRAX REVELATION RX2 PRO literally takes my breath away. The absolutely audiophile reproduction this amplifier offers is out of this world and takes BRAX's uncompromising sound quality demands to a new level. I am convinced that this technological masterpiece will open the eyes of even the most staunch analog advocates and show them a new era of top-notch amplification."

New Sound Quality Standard with PURIFI EIGENTAKT Technology

The BRAX RX2 PRO uniquely combines compact dimensions and efficiency with technical and sound parameters that elevate all amplifier manufacturing standards to a completely new level. In collaboration with Danish manufacturer PURIFI, a unique, uncompromising solution worthy of the BRAX brand was realized based on the patented EIGENTAKT technology, dispelling all prejudices against digital amplification. All measured values, such as distortion (THD+N), intermodulation (IMD), or signal-to-noise ratio (SNR), are so exceptional that only the most expensive measuring systems can accurately capture them. The foundation of this unique performance is the principle of multistage feedback, where several extremely wideband and fast control loops in the amplifier stages compensate for all nonlinearities. Even the output relays have their own control loop, eliminating their minimal contact transition resistance. The crucial aspect is that the necessary LC output filter for Class D amplifiers is included in the control loops, completely compensating for its impact on distortion and output impedance. The RX2 PRO achieves a phenomenal damping factor of 10,000, not only at the usual measurement frequency of 1 kHz but across the entire audio band. The load-dependent frequency response typical for Class D amplifiers is also a thing of the past thanks to this topology. No matter what speaker the RX2 PRO drives - its amplitude response remains perfectly linear up to 60 kHz.

State-of-the-Art Power Supply

Another key to the unbeatable sound quality of the RX2 PRO is its exceptionally sophisticated power supply. A regulated source is a matter of course, providing the output stages with independent and constant voltage from the battery. The RX2 PRO thus offers not only full compatibility with the Start-Stop function but also allows operation in electric vehicle networks, where voltage can reach up to 18 V. The power supply is also equipped with a total of 67 electrolytic capacitors with enormous capacity, capable of delivering massive current impulses on demand. To ensure the printed circuit board does not restrict current flow, eight layers of copper provide the lowest possible internal resistance. That's not all — the large number of layers also brings additional advantages — together with thoughtful arrangement, it prevents high currents from affecting sensitive input or feedback signals.

Flexible Input Options and Superior Signal Processing

At the input, the RX2 PRO offers two variants: an analog input module or a module with a digital SPDIF interface. Both versions use sophisticated technology that eliminates any negative impact on sound quality from the start. The analog module introduces the new "Super-Balanced" concept, where two extremely low-noise and low-distortion BurrBrown OPA1612 operational amplifiers form a differential input stage. These not only amplify but ensure high resistance to interference typical for automotive environments thanks to exceptional common-mode rejection. The digital module with optical and coaxial SPDIF input features a top-notch ESS D/A converter with parameters unparalleled in car audio: a signal-to-noise ratio of 130 dB and distortion of -117 dB (0.00014%) guarantee absolute sound neutrality. These values are partly due to the power supply — a special dual-channel ESS regulator supplies each channel separately with extremely stable and low-noise voltage. Consistent with BRAX's philosophy, the digital module naturally supports the proprietary DiSAC 2.0 BRAX DSP protocol for unique volume control at the end of the signal chain.

Compact Design and Revolutionary Efficiency

Despite all its technical uniqueness, the RX2 PRO presents itself in an elegant and compact form. Even with an output power of up to 2 x 300 W at 4 Ω (2 x 510 W at 2 Ω or 1 x 930 W bridged), it is exactly the same size as the BRAX DSP and 40% smaller than the GX2000, or 66% smaller than the MX4 PRO. In terms of efficiency, power consumption, and low heating, BRAX opens a new chapter and aligns with the trend of higher power density and maximum efficiency, finding its place even in modern vehicles.

Award-Winning Digital Revolution in Amplifier Construction

No matter how you look at the RX2 PRO, it is simply a revolution. After more than three years of intensive development, it represents a new milestone, confirmed by the prestigious EISA award "In-Car Amplifier 2024 - 2025": "What was previously unthinkable has become a reality. With the BRAX REVELATION RX2 PRO, Audiotec Fischer introduces the first 'digital' power amplifier under the BRAX brand. To have Class D technology match or even surpass BRAX's analog high-end amplifiers, the innovative Eigentakt technology from Purifi is used for the first time in automotive in the RX2 PRO, setting new standards in performance and sound. The BRAX REVELATION RX2 PRO exclusively uses the best components in the world and can be equipped with either an analog input module with TI/BurrBrown operational amplifiers or a digital module with ESS converters — in both cases, the highest signal quality is guaranteed. The result is not only an enormous output of 2 x 300 W at 4 Ω or 2 x 510 W at 2 Ω but above all an absence of noise and any distortion. For those looking for a modern compact Class-D amplifier with a true high-end approach, the BRAX REVELATION RX2 PRO is the answer."

Main Features

• Proprietary, bridgeable High-End Class D amplifier solution based on the patented "EIGENTAKT" technology by PURIFI – offers sound quality that outshines even the best Class A and Class AB amplifiers.
• Unique "Multistage Feedback Design" – several feedback loops individually compensate for all nonlinearities in the power section, including LC filters and even output relays for absolute precision.
• Excellent measured values – with negligible THD+N, minimal intermodulation distortion, impedance-independent linear frequency response up to 60 kHz, and massive signal-to-noise ratio outperforming anything known so far.
• Modular input design with optional modules – choice between analog or digital inputs.
• Analog stereo input module – with innovative "Super-Balanced" input structure for extremely high resistance to interference due to maximum common-mode rejection, equipped with the currently best sounding and ultra-low noise operational amplifiers OPA1612 by BurrBrown.
• Digital stereo input module – equipped with the latest high-end D/A converter ES9039Q2M by ESS, powered by a special voltage regulator developed by ESS, where each DAC channel has its own separate extremely low-noise and stable power supply. Equipped with optical and coaxial SPDIF input, supporting the proprietary DiSAC protocol for lossless and highly innovative volume control, controllable via BRAX DSP.
• Unbeatably sophisticated power supply – regulated power source with start-stop support for power stages with massive total capacity for maximum impulse current capacity. Separate voltage regulators for each input and control stage ensure maximum stability and prevent any impact on signal quality; suitable up to 18 V onboard voltage for electric vehicles.
• Exceptional, frequency-independent damping factor over 10,000 @ 4 Ω – unlike common Class D concepts, ensures maximum control over speakers across the entire frequency range and thus unparalleled sound precision.
• Especially compact and maximally efficient – same size as BRAX DSP, ideal for modern vehicle concepts due to low heating and high efficiency.
• Extremely low-impedance 8-layer printed circuit board – allows maximum lossless current flow and simultaneously the best possible separation of sensitive input section signals from the power stages.
• Use of exclusively the highest quality and carefully selected components – guarantees maximum consistency in serial production and extraordinary lifespan.
• Comprehensive protective circuits – optimal protection of the amplifier and connected speakers under all conceivable load and temperature conditions.
• Processor and temperature-controlled fan – ensures optimal cooling and ideal operational temperature range of the amplifier.
• Separate connector for BRAX Power Stabilizer – for improved power supply and maximum amplifier performance.
• Massive heatsink made of special aluminum alloy – allows optimal heat dissipation and consistently high performance.
• Engraved serial number on a stainless steel nameplate – underscores the exclusivity of the amplifier.

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• Car amplifiers 2-channel car amplifiers
• High-end car audio from Germany - BRAX