Brax RX2 Pro Amplifier - Analog In Silver

Brax RX2 Pro Amplifier - Analog In Silver

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

Heinz Fisher: "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 technology. 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 claims to a new level. I am convinced that this technological masterpiece will open the eyes of even the biggest proponents of analog technology and show them a new era of top-notch amplification."

New Standard of Sound Quality with PURIFI EIGENTAKT Technology

The BRAX RX2 PRO uniquely combines compact dimensions and efficiency with technical and sound parameters that take 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 basis of this unique performance is the principle of multi-stage feedback, where several extremely wide-band 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 in Class D amplifiers is included in the control loops, fully compensating for its effect 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 of Class D amplifiers is 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 extremely sophisticated power supply. A regulated source, which provides the final stages with voltage independent of the battery, is standard. The RX2 PRO thus offers not only full compatibility with the Start-Stop function but also operation in electric vehicle networks where the voltage can reach up to 18 V. The power supply is also equipped with a total of 67 electrolytic capacitors with a massive capacity, capable of delivering powerful current impulses when needed. To ensure the circuit board does not limit current flow, eight layers of copper ensure the lowest possible internal resistance. But that's not all - the large number of layers brings additional benefits, along with a thoughtful arrangement preventing high currents from affecting sensitive input or feedback signals.

Flexible Input Options and Top 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. The analog module features a new "Super-Balanced" concept for the first time, where two extremely low-noise and low-distortion BurrBrown OPA1612 operational amplifiers form the differential input stage. These not only amplify but ensure high resistance to interference typical of the automotive environment thanks to extraordinary common-mode noise rejection. The digital module with optical and coaxial SPDIF input offers a top ESS D/A converter with parameters unmatched 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 thanks to the power supply - a special dual-channel ESS regulator supplies each channel individually with extremely stable and low-noise voltage. In line with BRAX's philosophy, the digital module of course 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. 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 bridge), it is exactly the same size as the BRAX DSP and 40% smaller than the GX2000, respectively 66% smaller than the MX4 PRO. In terms of efficiency, power consumption, and low heating, it opens a new chapter for BRAX and corresponds to the trend of higher power density and maximum efficiency, to find 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, as 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. To equate or even surpass Class D technology with analog high-end BRAX 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 massive 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. Those looking for a modern compact Class-D amplifier with a true high-end approach 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" - multiple feedback loops individually compensate for all nonlinearities in the power section, including LC filters and even output relays for absolute precision.
• Outstanding measured values - due to negligible THD+N, minimal intermodulation distortion, impedance-independent linear frequency response up to 60 kHz, and enormous signal-to-noise ratio, surpasses everything known so far.
• Modular input concept with optional modules - choice between analog or digital inputs.
• Analog stereo input module - with an innovative "Super-Balanced" input structure for extremely high interference resistance due to maximum common-mode noise 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 D/A converter ES9039Q2M from ESS, powered by a special voltage regulator developed by ESS, with each DAC channel having 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 supply with start-stop support for power stages with a massive total capacity for maximum impulse current load capacity. Separate voltage regulators for each input and control stage ensure maximum stability and prevent any influence on signal quality; suitable up to 18 V 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 band and thus unparalleled sound accuracy.
• Especially 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 printed circuit board - allows maximum loss-minimized current flow and simultaneously the best possible separation of sensitive input section signals from power stages.
• Use of only the highest quality and carefully selected components - ensures maximum consistency in serial production and extraordinary durability.
• 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 operating temperature range of the amplifier.
• Separate connector for BRAX Power Stabilizer - to improve power supply and maximize amplifier performance.
• Massive heatsink made of special aluminum alloy - allows optimal heat dissipation and consistently high performance.
• Engraved serial number on stainless steel nameplate - underscores the amplifier's exclusivity.

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