Radial Voco-Loco Mk2 Mic Preamp and Effect Loop Switcher

Description

The Radial Voco-Loco Mk2 is a professional-grade effects interface designed specifically for vocalists who want to integrate their favorite guitar stompboxes into a microphone signal chain without compromising audio quality. Built around a high-performance integrated op-amp with a Class A FET input circuit, the Voco-Loco Mk2 preserves the natural character and clarity of your voice while enabling seamless compatibility with instrument-level effects. This unique design bridges the gap between microphone-level and pedal-level signals, allowing singers and spoken-word performers to shape their sound with the same creative tools traditionally reserved for guitarists.

Engineered for both studio and live performance environments, the Voco-Loco Mk2 offers exceptional headroom, low noise, and ultra-low distortion. With a wide frequency response from 20 Hz to 20 kHz and a dynamic range of 100 dB, it delivers pristine audio reproduction across the entire vocal spectrum. Advanced signal conditioning features such as input pad, polarity reverse, and ground lift ensure optimal gain staging and noise-free operation in virtually any setup. The integrated effects loop allows you to insert pedals directly into your vocal chain, while maintaining proper impedance matching for consistent tone and reliable performance.

Housed in a rugged 14-gauge steel chassis and outer shell, the Radial Voco-Loco Mk2 is built to withstand the demands of touring and constant stage use. Its transformer-balanced XLR input and output connections provide professional connectivity to mixing consoles, audio interfaces, and stage boxes. Designed for use in dry locations between 41°F and 104°F, and backed by Radial’s transferable 3-year warranty, the Voco-Loco Mk2 is a long-term investment for vocalists, producers, and sound engineers seeking uncompromising sound quality and creative flexibility.

Key Features

• Integrated op-amp design with Class A FET input circuit for transparent vocal tone
• Built-in effects loop for seamless integration of guitar pedals with microphones
• Wide frequency response (20 Hz – 20 kHz) with 100 dB dynamic range
• Input pad, 180° polarity reverse, and ground lift for flexible signal control
• Ultra-low total harmonic and intermodulation distortion (<0.005%)
• Rugged 14-gauge steel chassis for touring and stage reliability
• Transformer-balanced XLR input and output connections
• High headroom with +15 dBu clip level for distortion-free performance

Technical Specifications

Audio Circuit Type: Integrated Op-Amp with Class A FET input circuit
Frequency Response: 20 Hz – 20 kHz
Dynamic Range: 100 dB
Gain: 52 dB
Clip Level: +15 dBu
Total Harmonic Distortion: <0.005%
Intermodulation Distortion: <0.005%
Phase Deviation: 8° @ 50 Hz
Input Impedance: 10 kΩ, 100 kΩ (FX Loop)
Output Impedance: 300 Ω, 3000 Ω (FX Loop)
Common Mode Rejection Ratio: -73 dB @ 55 Hz
Equivalent Input Noise: -120 dBu
Noise Floor: -85 dBu
Maximum Input: +10 dB
Features: Input pad, 180° polarity reverse, ground lift, effects loop
Input Connectors: XLR-F
Output Connectors: XLR-M
Construction: 14-gauge steel chassis and outer shell
Power: 400 mA, center positive
Operating Conditions: For use in dry locations only between 41°F and 104°F
Warranty: Radial 3-year, transferable
Part Number: R800 1425 00

What’s Included

• Radial Voco-Loco Mk2 Effects Interface
• User Guide