Royer Labs Line dB Booster

The Royer Labs R-DB20 dBooster is a compact, phantom-powered signal booster designed for ribbon and dynamic microphones. Perfect for professional applications, the R-DB20 enhances low-output mics with selectable clean gain levels of 12 dB or 20 dB, ensuring high headroom and gain without compromising audio quality. The Class A input circuitry minimizes distortion and coloration while improving headroom, making it suitable for capturing delicate acoustic details and vocals. With a high input impedance and low output impedance, the R-DB20 minimizes signal loss across long cable runs and can drive difficult loads, such as vintage preamps and splitters, without sacrificing clarity.

Recommended Applications

• Amplifying low-volume sound sources (acoustic instruments, vocals)
• Direct recording to DAW interfaces
• Maintaining signal integrity on long cable runs

Features

• Gain Settings: 12 dB and 20 dB selectable gain
• High Input Impedance: Minimizes microphone loading
• Low Output Impedance: Ideal for long cable runs
• Rugged Construction: Built for professional use
• Ultra-Low Noise and Distortion: For pristine sound capture
• Ribbon Mic Safety: Protects against phantom power
• Wide Frequency Bandwidth: 20 Hz – 20 kHz ±0.25 dB

Specifications

• Gain: 12 dB or 20 dB
• THD+N: <0.0015% at 20 dB gain, <0.001% at 12 dB gain
• Frequency Response: 20 Hz – 20 kHz ±0.25 dB
• Input Impedance: 3.6k Ohms
• Output Impedance: 300 Ohms (at 20 dB)
• Power: 48V phantom
• Dimensions: 3.62 x 2.0 x 1.62 in
• Weight: 6 oz