Royer Labs dBooster

MSRP: $199.00
(You save $50.00 )
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The dBooster is the industry’s cleanest in-line phantom powered signal booster for non-powered ribbon and dynamic microphones. It has two steps of gain; 12 dB or 20 dB switchable, bringing new life to low output mics for use on vocals, acoustic guitar, ukulele, etc. Great for long cable runs too.


  • Switchable 12dB/20dB gain
  • Ultra-low noise, ultra-low distortion
  • Class A input stage
  • Safe for use on all ribbon mics
  • Wide frequency bandwidth
  • Retains sound quality on long cable runs
  • Maintains headroom and gain regardless of load
  • Perfect for low-volume instruments and vocals

The dBooster generates virtually zero distortion and self-noise, even in the highest gain setting. The dBooster’s gain levels remain consistent, regardless of the preamps used or the electrical load.

(We’ve measured all the in-line preamplifier products made today and found sometimes-substantial distortion levels in all of them, and they often lose output level when loaded. No such problems with the dBooster)

The dBooster gives amazing results with SM-7s on vocals. Set for 20 dB of gain for softer singers or dial back to 12 dB to keep your preamp or DAW from breaking up when a louder singer wants to eat the mic.

The dBooster pairs beautifully with our R-10, R-121 and SF-12 ribbon microphones. Royer phantom-powered ribbon mics are preferable when the budget allows, but the dBooster is the best way to increase gain with nonpowered Royer ribbons.

The dBooster is hand-built in the USA and ships from our Burbank

Our ONE WITH EVERYTHING ZEN WARRANTY extends the standard manufacturer warranty by one year, see our ZEN WARRANTY page for details.