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AEA Launches RPQ503 Preamp and Snaqbox Chassis

Christian Wissmuller by Christian Wissmuller
August 15, 2025
in Pro Audio
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AEA announces the launch of the RPQ503, a 500 Series preamp and EQ module built on the third-generation circuitry of its celebrated RPQ3. Drawing on over 45 years of ribbon mic expertise and nearly three decades of in-house manufacturing, the RPQ503 delivers the rich, natural sound and clean, high-gain performance that engineers and artists have come to expect from AEA. Launching alongside the RPQ503 is the AEA Snaqbox, a portable and transparent two-channel 500 Series chassis. Both units will begin shipping on August 15 through AEA’s dealer network.

Next-Gen Clarity and Control
​
RPQ503 builds on the legacy of the RPQ500, introducing an expanded EQ section and refined circuitry designed for clean, responsive performance. AEA’s CurveShaper™ EQ offers sweepable high and low EQ controls with up to ±20 dB of boost or cut, allowing engineers to shape tone directly at the front end of the signal path. Even with extreme settings, the EQ maintains a natural, flattering character — ideal for enhancing vocals, instruments, or ambient recordings. With 85 dB of clean gain and an ultra-high 68 kΩ input impedance, the RPQ503 is optimized for passive ribbon microphones while remaining fully compatible with dynamic and phantom-powered condenser mics.

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“Our focus has always been on developing ultra-low noise, low-distortion preamps for those who demand high, clean gain,” said Julie Tan, CEO of AEA. “With the RPQ503, we’ve brought our best third-generation preamp design to the 500 Series format — making it a flexible and portable front-end for everything from intimate vocals to loud instruments.”

RPQ503 Specs

  • 1-space 500 Series preamp module
  • AEA third-generation preamp circuitry
  • Ultra-high 68 kΩ input impedance (phantom power off)
  • 7 to 85 dB of gain
  • Sweepable low- and high-frequency EQ
  • ±20 dB EQ boost/cut
  • EQ in/out switching with center-detented gain pots
  • +48V phantom power
  • Polarity (phase invert) switch
  • Mic/line input switching (line input bypasses mic pre)
  • Dimensions (W×D×H): 1.5” × 6.8” × 5.2” (3.8 × 17.3 × 13.3 cm)
  • Weight: 12 oz (0.34 kg)
  • Price: $749

Transparent Signal Flow
​
Built with separate linear regulators for each slot, the Snaqbox ensures complete power isolation between modules — preserving signal integrity across any configuration. Its rugged steel frame and clear or fluorescent acrylic side panels provide a visual window into the 500 Series signal chain, while the LINK/CASCADE switch enables internal routing between channels without the need for external cabling. Compact and durable, the Snaqbox is well-suited for use in studios, mobile setups, and live performance environments.

Compatible with all standard 500 Series modules, the Snaqbox supports a wide range of workflows — from housing AEA’s ribbon-optimized preamps to integrating third-party gear. Its compact form offers engineers and artists a practical yet expressive tool for customizing their signal path.

Snaqbox Specs

  • 2-slot 500 Series chassis
  • Durable steel housing with clear or fluorescent orange acrylic side panels
  • XLR input and output
  • LINK/CASCADE switch for internal signal routing
  • External switching power supply
  • Compatible with all standard 500 Series modules
  • Power per slot: +16V @ 150mA, –16V @ 150mA, +48V phantom @ 13mA
  • Dimensions (L×W×H): 7.4” × 3.3” × 5.9”
  • Unit weight: 2.2 lb (998 g)
  • Shipping weight: 4.6 lb (2.1 kg)
  • Price: $299

To learn more about the RPQ503 and the Snaqbox, or to find a dealer, visit https://aearibbonmics.com.

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