CAD Audio PA28 Inline Preamplifier

The CAD Audio PA28 is a compact, high-performance inline preamplifier designed to add clean gain to low-output dynamic or ribbon microphones. It helps improve gain staging for broadcast, podcasting, live performance, and studio use.

This inline preamp provides +28 dB of buffered gain, ensuring that the microphone signal remains strong and consistent even over long cable runs. The PA28 presents a low output impedance and stable level without introducing noise or distortion. Its metal housing ensures durability in active setups.

Ideal for users working with microphones that struggle to reach optimal levels on mixers or audio interfaces, the PA28 ensures a more robust signal path. Use it directly between your mic and XLR cable to lift the signal where needed, without bulky external rack gear.

Key Features

• Gain Boost: +28 dB clean, linear gain for low-output mics
• Buffered Design: Maintains signal integrity regardless of downstream load
• Low Output Impedance: Compatible with long cable runs
• All Metal Construction: Rugged build for reliable field use
• Simple Inline Operation: No knobs or switches, plug-and-play

Technical Specifications

• Gain: +28 dB
• Frequency Range: 10 Hz to 120 kHz
• Electrical Impedance: 135 ohms
• Current Consumption: 3.0 mA
• Maximum Output (0.5 Percent THD): 8.3 dBV (approx. 2.6 V)
• Input / Output Connectors: 1 x XLR 3-pin input, 1 x XLR 3-pin output

What’s in the Box

• 1x CAD Audio PA28 inline preamp