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AEA

RPQ503

500 Series Preamps

500 Series mic preamp with Ribbon Mic EQ, phantom power, and high-output gain. Cinemag input transformer, variable impedance, ultra-low noise design.

$1,025.00 CAD
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Description

The AEA RPQ503 is a premium 500 Series mic preamp module specifically designed to bring out the full potential of ribbon microphones-especially AEA's own-but it works beautifully with condensers and dynamics as well. This high-gain, low-noise preamp is engineered with transparency and headroom in mind, preserving the integrity and detail of the original signal while adding subtle warmth.

At the heart of the RPQ503 is AEA's acclaimed CurveShaper EQ, which gives users fine control over tonal shaping without compromising the original character of the source. The HF boost enhances clarity and presence-ideal for vocals, acoustic instruments, or any track needing air-while the low-frequency filter helps manage proximity effect or tame excessive bass. With up to 81 dB of quiet gain, it's particularly suited for low-output ribbons and delicate sources, making it a studio essential for engineers who demand precision and musicality.

Features

Optimized for Ribbon Microphones: Provides high-gain, low-noise amplification ideal for passive ribbon mics.

Powerful Dual Stage Gain: Clean 81dB of gain ensures full signal clarity even with quiet sources.

Custom Input Impedance: High input impedance (63K ohms) preserves low-end and detail, especially for ribbons.

Contour Circuit: Unique EQ circuit boosts presence or cuts muddy lows without altering character.

Compact 500 Series Format: Fits into any standard 500 Series chassis like the AEA SNAQBOX.

High-Headroom Performance: Handles transients and loud sources cleanly without distortion.

Front Panel DI Input: Instantly connect instruments with dedicated high-impedance input.

Specifications

General

Format: 500 series single-slot module

Type: High-gain mic preamp with JFET DI and CurveShaper EQ

Compatible Chassis: Any 500-series chassis including AEA SNAQBOX

Mic Preamp

Gain Range: 85 dB total gain

Input Impedance: 63k ohms

EIN: -129 dBu typical

Phantom Power: 48V switchable

Polarity: Switchable

DI (Direct Input)

Input Type: JFET high-impedance

Input Impedance: 10M ohms

Gain Range: 75 dB

Ground Lift: Switchable

EQ Section (CurveShaper)

Low Frequency Control: Variable LF boost with adjustable corner frequency

High Frequency Control: Shelf boost starting at 2kHz

Bypass: Full EQ bypass switch

Output

Output Impedance: 150 ohms

Max Output Level: +28 dBu

Balanced Output: Transformerless balanced

Power Requirements

Current Draw: 120 mA (500 series standard slot)

Physical

Dimensions (WxHxD): Standard 500 series module

Weight: Approximately 0.6 kg

Additional Features

LED signal level indicator

Precision stepped gain control

Designed and handcrafted in Pasadena, California

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