Brax RX2 Pro Amplifier - Digital In Silver

Brax RX2 Pro Amplifier - Digital In Silver

A new era begins with the BRAX REVELATION RX2 PRO, as the name suggests: A new digital revelation of sound that surpasses everything 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. But I must express this clearly: BRAX REVELATION RX2 PRO takes my breath away. The absolutely audiophile reproduction this amplifier offers is out of this world and elevates BRAX's uncompromising sound quality to a new level. I am convinced that this technological masterpiece will open the eyes of even the biggest analog advocates and show them a new era of high-end amplification."

New Sound Quality Standard with PURIFI EIGENTAKT Technology

The BRAX RX2 PRO uniquely combines compact dimensions and efficiency with technical and sonic parameters that elevate amplifier manufacturing standards to an entirely 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 measurement systems can accurately capture them. The basis of this unique performance is the multi-stage feedback principle, where several extremely broadband 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. Crucially, the necessary LC output filter for Class D amplifiers is included in the control loops, fully compensating its impact on distortion and output impedance. The RX2 PRO thus achieves a phenomenal damping factor of 10,000—not only at the usual measuring frequency of 1 kHz but across the entire audio band. Also, the load-dependent frequency response typical for Class D amplifiers is a thing of the past thanks to this topology. No matter what speakers the RX2 PRO drives, its amplitude response remains perfectly linear up to 60 kHz.

State-of-the-Art Power Supply

Another key to the unparalleled sound quality of the RX2 PRO is its extraordinarily sophisticated power supply. It features a regulated power source that supplies the end 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 immense capacity, capable of delivering massive current impulses when needed. To ensure the circuit board does not restrict current flow, eight layers of copper provide the lowest possible internal resistance. But that's not all; the large number of layers also brings other advantages—along with thoughtful layout, it prevents high currents from affecting sensitive input or feedback signals.

Flexible Input Options and Premium Signal Processing

The RX2 PRO offers two input options: an analog input module or a module with a digital SPDIF interface. Both versions use sophisticated technologies that eliminate any negative impact on sound quality from the outset. In the analog module, a new "Super-Balanced" concept is used for the first time, where two extremely low-noise and low-distortion BurrBrown OPA1612 operational amplifiers form a differential input stage. These not only amplify but also provide high interference resistance typical for automotive environments due to exceptional common-mode rejection. The digital module with optical and coaxial SPDIF input offers 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. The power supply contributes to these values—a special dual-channel ESS regulator supplies each channel separately with extremely stable and low-noise voltage. In line with BRAX's philosophy, the digital module naturally supports the proprietary DiSAC 2.0 BRAX DSP protocol for unique end-of-signal-chain volume control.

Compact Design and Revolutionary Efficiency

Despite its technical uniqueness, the RX2 PRO is presented in an elegant and compact form. Despite 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, current consumption, and low heating, BRAX opens a new chapter, aligning with the trend of higher power density and maximum efficiency to find its place even in modern vehicles.

Award-Winning Digital Revolution in Amplifier Construction

From any angle, the RX2 PRO is 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 reality: With the BRAX REVELATION RX2 PRO, Audiotec Fischer introduces the first 'digital' power amplifier under the BRAX brand. For Class D technology to match or even surpass BRAX's analog high-end amplifiers, the innovative Eigentakt technology from Purifi is used in the RX2 PRO for the first time in automotive, setting new standards in performance and sound. The BRAX REVELATION RX2 PRO exclusively uses the world's best components 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 enormous power of 2 x 300 W at 4 Ω or 2 x 510 W at 2 Ω but above all the absence of noise and any distortion. If you are looking for a modern compact Class-D amplifier with a true high-end approach, you will find it in the BRAX REVELATION RX2 PRO."

Main Features

• Proprietary, bridgeable High-End Class D amplifier solution based on the patented "EIGENTAKT" technology from PURIFI - offers sound quality that surpasses 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.
• Outstanding measured parameters - thanks to negligible THD+N distortion, minimal intermodulation distortion, impedance-independent linear frequency range up to 60 kHz, and enormous signal-to-noise ratio, it surpasses everything known so far.
• Modular input concept with optional modules - offers the choice between analog or digital inputs.
• Analog stereo input module - with innovative "Super-Balanced" input structure for exceptionally high interference resistance due to maximum common-mode rejection, equipped with the currently best-sounding and ultra-low-noise operational amplifiers OPA1612 from BurrBrown.
• Digital stereo input module - equipped with the latest top-of-the-line ES9039Q2M D/A converter from ESS, powered by a special voltage regulator developed by ESS, with each DAC channel using separate extremely low-noise and stable power supply. Featuring 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 enormous total capacity for maximum impulse current delivery. Separate voltage regulators for each input and control stage ensure maximum stability and eliminate any impact on signal quality; suitable for up to 18 V onboard voltage for electric vehicles.
• Exceptional, frequency-independent damping factor over 10,000 at 4 Ω - unlike common Class D concepts, ensures maximum speaker control across the entire frequency range and thus unparalleled sound accuracy.
• Uniquely compact and maximally efficient - the same size as the BRAX DSP, ideal for modern vehicle concepts due to low heating and high efficiency.
• Extremely low-impedance 8-layer circuit board - allows maximum loss-minimized current flow and at the same time the best possible separation of sensitive input section signals from power stages.
• Use of exclusively the highest quality and carefully selected components - guarantees maximum manufacturing consistency and extraordinary lifespan.
• Comprehensive protective circuits - optimal protection of the amplifier and connected speakers under all conceivable operating and temperature conditions.
• Processor and temperature-controlled fan - ensures optimal cooling and ideal operating temperature of the amplifier.
• Separate connector for BRAX Power Stabilizer - for better 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