Royer Labs dBooster R-DB20 dBooster In-Line Signal Booster
The Royer model R-DB20 is a phantom-powered ribbon and dynamic microphone signal booster and impedance buffer. It increases the level of passive low-output ribbon and dynamic microphones with a minimum of distortion or coloration. Designed for professional applications, the dBooster provides two levels of clean gain boost; 12dB and 20dB, selectable by a front panel switch. The dBooster maintains headroom and gain regardless of load.
The Class A input circuitry presents a high source impedance to the microphone, which minimizes loading (damping). This reduces coloration and distortion while at the same time improving headroom.
By utilizing the 12/20dB gain switch, optimum balance between gain and headroom can be achieved for a variety of uses.
The low-impedance output of the dBooster is an increased microphone-level signal that can drive a digital interface directly or a standard microphone preamplifier. It also minimizes signal loss on long cable runs.
RECOMMENDED APPLICATIONS
- Miking any low-volume sound source (acoustic instruments, vocals, etc.)
- Recording direct to a DAW interface
- Use on long cable runs to retain sound quality
FEATURES
- 12dB and 20dB gain stages
- High input impedance
- Low output impedance
- Rugged case construction
- Ultra-low noise performance
- Ultra-low distortion
- Wide frequency bandwidth
BENEFITS
- Safe for use on all ribbon mics
- Increases headroom at the preamp
- Provides true electrical isolation
- Protects ribbon mics from phantom-power
- Minimizes mic loading
- Capable of driving difficult loads, such as mic splitters and vintage style preamps, without increased distortion or loss of gain
Specifications
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- Gain _x0009_12dB or 20dB switchable
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- THD+N _x0009_@ 20dB Gain = .0015%, -25dBu input signal, 1.3Vp-p output signal
- @ 12dB Gain = .001%, -6Bu input signal, 3.66Vp-p output signal
- IM Distortion _x0009_@ 20dB setting, < .002% @ 800mV output,
- @ 12dB setting, < .005% @ 2.6volts output
- Self-Noise _x0009_referred to -48dB re. 1V/pa, 20dB setting < 11dBa, 12dB setting < 15dBa
- Headroom _x0009_referred to -48dB re. 1V/pa and 4mV/pa, 20dB setting: 127dB, 12dB setting: 120dB
- Frequency response _x0009_20Hz-20kHz +/- .25dB
- Input Impedance _x0009_3.6K-Ohm
- Output Impedance _x0009_(at 20dB setting) 300-Ohms
- Current draw _x0009_approximately 5ma at zero signal and 7.5ma at full output
- Input and output connections _x0009_Balanced XLR: (Pin 1 Ground, Pin 2 Signal. Hot, Pin 3 Signal Cold)
- Power _x0009_48-Volt phantom
- Dimensions _x0009_3.62” (92mm) L X 2.0” (51mm) W X 1.62” (41.3mm) W
- Weight _x0009_6 oz (170g)
Warranty
The dBooster is covered by a one-year warranty. This warranty covers parts and labor but does not cover damage as a result of misuse or abuse.