RO-04 Pro Mic Preamp 0~72db Adjustable Gain Boost with Hi-Z, 48V, HPF, Phase for Dynamic Condenser Ribbon Microphone, Guitar, Bass Recording and Podcasting

★★★★★ 5.0 68 reviews

$89.99
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$89.99
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Free shipping Free 30-day returns

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Product details

Management number 208633624 Release Date 2026/03/22 List Price $36.00 Model Number 208633624
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  • With up to 72dB of clean gain, RO-04 makes even the faintest sounds or distant voices come through full and detailed. Perfect for high-impedance dynamic mics like the Shure SM58, SM7B, or MV7X—unlock their true tone and let them perform at their best, without straining to be heard.
  • With an EIN noise floor as low as -120dB, and still -100dB even at max 72dB gain, RO-04 keeps your recordings clean and hiss-free. Even the softest sounds stay clear and full, so your voice and instruments shine without background distractions.
  • At just 0.0035% THD at 1kHz, RO-04 captures every nuance exactly as you hear it—no unwanted color or smearing. Perfect for podcasts, voiceovers, and ASMR where accuracy and clarity are everything.
  • Unlike cheaper preamps that share one circuit for both mic and instrument, RO-04 uses separate high-impedance and mic input stages—so you can plug in a guitar and a mic at the same time, with independent gain controls for each. Ideal for singer-songwriters and live recording.
  • Many preamps get noisy in the last half of the gain knob. RO-04’s unique 11-step gain switch plus trim control keeps noise consistently low across the entire range, giving you smooth, precise adjustments without the hiss jump.
Item Weight 2.55 pounds
Item model number RO-04
Product Dimensions 5.51 x 4.72 x 1.57 inches

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