Royer dBooster2
UPC/EAN #8500359000
MPN #RO-RDB22
$479.00
Save 18.7%, MSRP $589.00
Dual in-line signal booster & DI
The Royer model R-DB22 dBooster2 features two channels of dBooster ribbon & dynamic microphone signal boosting and impedance buffering technology. Each channel also doubles as a high-impedance DI.
When used as a signal booster, both channels of the dBooster2 increase the level of passive
low-output ribbon and dynamic microphones with a minimum of distortion or coloration.
Designed for professional applications, each dBooster2 channel offers two levels of clean gain
boost: 12dB or 20dB, selectable by a front panel switch.
The dBooster2's Class A input presents a high source impedance to microphones, minimizing
loading (damping) and improving headroom. By utilizing the 12/20dB gain switch, optimum
balance between gain and headroom can be achieved for a variety of uses.
The dBooster2's low-impedance output 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.
When used as a DI for unbalanced guitar level sources, the dBooster2 provides either 0dB or 8dB of
gain, selectable from the front panel switch. The single ended high-impedance (230K-Ohm) DI input
maintains headroom and gain regardless of load, with minimal distortion or coloration.
RECOMMENDED APPLICATIONS
Miking any low-volume sound source (acoustic instruments, vocals, etc.)Recording direct to a DAW interfaceUse on long cable runs to retain sound qualityDI for direct electric guitar, electric bass, and other instruments
BENEFITS
Safe for use on all ribbon micsIncreases headroom at the preampProvides true electrical isolationProtects ribbon mics from phantom-powerMinimizes mic loadingCapable of driving difficult loads, such as mic splitters and vintage style preamps, without increased distortion or loss of gain
Features
12dB and 20dB gain stages in Mic mode0dB or 8dB gain in Hi-Z guitar input modeHigh input impedanceBalanced Low output impedanceRugged case constructionUltra-low noise performanceUltra-low distortionWide frequency bandwidth
Specifications
Gain:
switchable 12dB or 20dB in Mic mode
switchable 0dB or 8dB in DI mode
THD+N:
@ 20dB Gain = .0015%, -25dBu input signal, 1.3Vp-p output signal
@ 12dB Gain = .001%, -6dBu input signal, 3.66Vp-p output signal
IM Distortion:
@ 20dB setting, < .002% @ 800mV output,
@ 12dB setting, < .005% @ 2.6volts output
Self-Noise:
referred to -48dB re. 1V/Pa ,
20dB setting < 11dBa,
12dB setting < 15dBa
Headroom:
referred to -48dB re. 1V/Pa and 4mV/Pa,
20dB setting: 127dB,
12dB setting: 120dB
Frequency response:
20Hz-20kHz +/- .25dB
Input Impedance:
3.6K-Ohm in Mic mode, 270K-Ohm in DI mode
Output Impedance :
(at 20dB setting) 300-Ohms
Current draw:
approximately 5mA at zero signal and 7.5mA at full output
Input and output connections:
Balanced XLR: (Pin 1 Ground, Pin 2 Signal Hot, Pin 3 Signal Cold), HI-Z (DI) ΒΌ-inch unbalanced, tip signal HOT.
Power:
48-Volt phantom
Dimensions:
3.875" (98.425mm) L X 3.875" (98.435mm) W X 1.75" (44.45mm) H
Weight:
10.2 oz (289g)
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