Based on the acclaimed third-generation circuit design of the RPQ3, the AEA RPQ503 brings the same rich and natural sound into the 500-series format. Combining high-gain, ultra-low-noise circuitry with AEA’s signature CurveShaper™ EQ, the RPQ503 offers exceptional performance optimised for ribbon microphones, yet equally impressive with dynamics and condensers.
With 85 dB of pristine gain, ultra-low distortion, and ultra-high 68 kΩ input impedance, the AEA RPQ503 reveals the full tonal range, transient detail, and depth of every microphone.
Its expanded EQ section features independent low and high-frequency boost/cut controls, with sweepable frequency ranges and shelving response, allowing engineers to tailor proximity effect, extend high-end presence, or sculpt tonal balance directly at the source.
Compact yet powerful, the AEA RPQ503 is more than just a preamp — it is a versatile signal-shaping tool suitable for tracking, mixing, and mastering. Designed and built in the USA, the AEA RPQ503 continues AEA’s legacy of transparent ribbon-optimised preamplifiers, now available in a portable 500-series form factor.
Features
- 1-Space 500-series preamp
- AEA Gen 3 preamp circuitry
- Ultra-high 68KΩ input impedance (phantom power off)
- 7 to 85 dB of gain
- LF/HF sweepable frequency
- EQ boost/cut, +/-20 dB
- EQ in/out switching; center detents on EQ gain pots
- +48V phantom
- Polarity switch
- Mic/line input switching (line input bypasses mic pre)
- Made in the USA