Brax Revelation RX2 PRO Amp High-End 2 Channel Digital Input Amplifier Silver

The Brax Revelation RX2 PRO (Digital Input, Silver) is a high-end 2-channel Class D car amplifier built on PURIFI EIGENTAKT technology, outputting 2 x 300 W @ 4 Ω, and part of Brax's Revelation range.

This is the digital input version, ideal for use with a Brax DSP thanks to DiSAC 2.0 volume control. If your system uses RCA line-level signals, choose the RX2 PRO Analog Input (Silver). Prefer a different finish? See the Black version.

Key specifications

• Channels: 2, bridgeable
• Power output: 2 x 300 W @ 4 Ω, 2 x 510 W @ 2 Ω, 1 x 930 W bridged @ 4 Ω
• Topology: Class D, PURIFI EIGENTAKT with Multistage Feedback
• Input module: digital stereo, ESS ES9039Q2M DAC, optical and coaxial SPDIF
• Signal-to-noise ratio: 130 dB; distortion: -117 dB (0.00014%)
• Supports Brax DiSAC 2.0 volume control protocol
• Damping factor: over 10,000 @ 4 Ω across the full audio band
• Linear frequency response up to 60 kHz regardless of speaker impedance
• Regulated, start-stop-capable power supply; 67 electrolytic capacitors; suitable for EV onboard voltages up to 18 V
• 8-layer printed circuit board
• Processor and temperature-regulated fan; aluminium alloy heat sink
• Connector for Brax Power Stabiliser
• Same footprint as a Brax DSP
• Engraved serial number on stainless steel type plate
• Colour: Silver

The beginning of a new era

Digital signal processing has long been part of the Brax world via the Brax DSP, but analogue amplification has always been considered the benchmark for best-in-class sound quality. The Brax Revelation RX2 PRO changes that — it is a digital amplifier that outshines everything that has come before in the car audio segment.

"As a passionate musician with over 45 years of success in the audio industry, I never thought Class D technology could ever compete with analogue. But let me be clear: The Brax Revelation RX2 PRO takes my breath away. The level of audiophile performance this amplifier delivers is out of this world and elevates Brax's commitment to uncompromising sound to a new level. I am convinced that this technological masterpiece will open the eyes of even the most dedicated analogue enthusiasts to a new era of high-end amplification."

– Heinz Fischer

• Proprietary bridgeable high-end Class D amplifier based on PURIFI's patented EIGENTAKT technology — outperforms even the best Class A and Class AB amplifiers
• Unique Multistage Feedback Design — multiple feedback loops individually compensate for all non-linearities in the power section, including the LC filters and output relays
• Outstanding measurements — negligible THD+N, minimal intermodulation distortion (IMD), linear frequency response up to 60 kHz and 130 dB signal-to-noise ratio
• Modular input concept — choose between analogue or digital input modules
• Digital stereo input module — ESS ES9039Q2M DAC with a dedicated low-noise voltage regulator per channel; optical and coaxial SPDIF inputs; supports DiSAC 2.0 for lossless volume control via the Brax DSP
• Regulated, start-stop-capable power supply — 67 electrolytic capacitors for maximum peak current; separate voltage regulators for each input and driver stage; suitable for EV onboard voltages up to 18 V
• Damping factor over 10,000 @ 4 Ω across the full audio band — ensures maximum speaker control at all frequencies
• Same dimensions as a Brax DSP — compact, efficient, and well-suited to modern vehicle installations
• Ultra-low-impedance 8-layer PCB — maximises current flow and isolates sensitive input signals from the power stages
• Exclusive use of selected, finest-grade components — for consistency and durability
• Complex protection circuits — protect the amplifier and connected speakers under all load and temperature conditions
• Processor and temperature-regulated fan — maintains optimum operating temperature
• Separate connector for the Brax Power Stabiliser — for increased power supply headroom
• Massive heat sink in special aluminium alloy — optimum heat dissipation for continuously high performance
• Engraved serial number on stainless steel type plate — underlines the exclusivity of the amplifier

The new benchmark in sound quality — with PURIFI's EIGENTAKT technology

Developed in close collaboration with Danish manufacturer PURIFI, the RX2 PRO is built around their patented EIGENTAKT technology. All performance metrics — THD+N, intermodulation, and signal-to-noise ratio — are so extraordinary that only the most expensive measurement systems can accurately capture them.

The Multi-Stage Feedback principle uses several extremely broadband, ultra-fast feedback loops to compensate for all non-linearities in the amplifier stages, including the output relays and the LC output filter required for Class D operation. The result is a damping factor of over 10,000 — not just at 1 kHz, but across the entire audio band. Frequency response remains perfectly linear up to 60 kHz regardless of speaker impedance.

Paired with speakers such as the Brax Graphic GL6 MK2 6.5 Inch Mid Woofer or the Brax Graphic GL1 MK2 Aluminium Dome Tweeters, the RX2 PRO's exceptional damping and linearity can be fully realised.

Advanced power supply design

The RX2 PRO's power supply is regulated, providing a constant output voltage to the power stages independent of battery voltage — giving full start-stop capability and compatibility with EV onboard networks up to 18 V. A total of 67 electrolytic capacitors deliver enormous impulse current on demand. Eight copper layers on the PCB minimise internal resistance and ensure high currents have no influence on sensitive input or feedback signals.

Flexible input options with first-class signal processing

The digital input module features optical and coaxial SPDIF inputs and an ESS ES9039Q2M DAC, achieving a signal-to-noise ratio of 130 dB and a distortion figure of -117 dB (0.00014%). A dual voltage regulator — developed specifically by ESS — supplies each channel separately with an extremely low-noise, highly stable operating voltage. The module supports the Brax DiSAC 2.0 protocol for lossless, advanced volume control via the Brax