I’m using a SM58 microphone with a Scarlett 2i2 audio interface. How do I connect and use?

Connect SM58 to RO03 XLR input. Link RO03 output to 2i2 6.35mm Line In via XLR-TRS cable or 6.35mm TRS cable. Set 2i2 gain to minimum, then adjust RO03 gain slowly for a healthy signal level.

Can I connect two microphones to the RO03 at the same time?

No, you can only use one input at a time. The two input ports cannot work simultaneously.

Can I connect this preamp to an outdoor speaker?

Yes. Use a 6.35mm TS cable from the RO03’s TS output to the Mic or Line input on your speaker.

What’s the difference between the 3 output jacks on the RO03?

The XLR and TRS outputs are identical, offering more cable options. The TS output is an attenuated signal, ideal for connecting to non-professional devices.

Do I need to turn on 48V phantom power on my audio interface for condenser mics?

No. Simply enable the 48V phantom power on the RO03 itself.

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Microphone Preamp Mic Gain Booster with 2 Input Max 75db Gain 48V Phantom Power for Dynamic and Condenser Mic

Microphone Preamp Mic Gain Booster with 2 Input Max 75db Gain 48V Phantom Power for Dynamic and Condenser Mic

Product ID: 501145926

Details

Brand
Rodyweil
Connectivity technology
XLR
Connector type
XLR
Model name
RO03
Recommended uses for product
Karaoke

🔌48V phantom power for condensers

🎙️Dual inputs with balanced XLR/TRS outputs

🎚️Up to 75dB adjustable gain

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₩171971

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Description

🎤 Elevate every vocal — pro-level gain, zero compromise.

PHANTOM POWER READY - Seamlessly supports condenser mics with stable 48V phantom power for pristine sound.
POWERFUL GAIN CONTROL - Boost your mic signal from 19 to 75dB for studio-grade clarity and fullness.
DUAL INPUT VERSATILITY - Connect dynamic and condenser mics simultaneously with balanced XLR and 1/4" TRS outputs.
NOISE OPTIMIZED RECORDING - Pair with RO-05 Noise Eliminator to crush ambient noise and capture pure audio.
INTERFACE FRIENDLY AMPLIFICATION - Replace your interface gain with clean, distortion-free amplification to avoid double boosting.

The Rodyweil RO-03 Microphone Preamp delivers up to 75dB of clean, adjustable gain with dual inputs and 48V phantom power, designed to enhance dynamic and condenser microphones. Its balanced XLR and 1/4" TRS outputs ensure compatibility with professional audio interfaces and mixers, while optional noise elimination pairing guarantees studio-quality clarity. Compact and metal-encased, it’s the perfect upgrade for millennial pros seeking flawless vocal presence and control.

Specifications

ASIN	B0B6NG9S4C
Antenna Location	Karaoke, Singing, Streaming
Audible Noise	75 Decibels
Audio Sensitivity	66 Decibels
Brand	Rodyweil
Built-In Media	microphone, warranty card
Color	Black,Transparent
Compatible Devices	Amplifier
Connectivity Technology	XLR
Connector Type	XLR
Customer Reviews	4.3 4.3 out of 5 stars (120)
Enclosure Material	Metal
Frequency Range	20Hz 20kHz
Frequency Response	20 KHz
Impedance	600 Ohms
Item Dimensions	9 x 10 x 11 centimeters
Item Weight	400 Grams
Manufacturer	Rodyweil
Mfr Part Number	RO03
Microphone Form Factor	Handheld
Model Name	RO03
Model Number	RO03
Number of Channels	1
Polar Pattern	Unidirectional
Power Source	Corded Electric
Signal-to-Noise Ratio	108
Special Feature	3.5mm jack, Lightweight, XLR
UPC	616859152007
Unit Count	1.0 Count

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₩171971

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In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

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