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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2026 Upgraded RO03 Mic Preamp, 120db EIN Ultral Low Noise Booster, for Dynamic & Condenser & Ribbon Microphone & Instrument, XLR/TRS Line Out, Type C Powered,with Build in 48V

2026 Upgraded RO03 Mic Preamp, 120db EIN Ultral Low Noise Booster, for Dynamic & Condenser & Ribbon Microphone & Instrument, XLR/TRS Line Out, Type C Powered,with Build in 48V

Product ID: 504016084

Details

Brand
Rodyweil
Colour
Black
Compatible devices
Amplifier
Connectivity technology
XLR
Connector type
XLR
Included components
microphone

🔊120dB EIN ultra low noise

🔌Type-C power for ultimate portability

🎛️19~66dB variable gain range

¥17946

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎤 Elevate Your Sound Game with Zero Noise, Maximum Impact!

POWER UP ANYWHERE WITH USB C - Modern Type-C power supply boosts portability and compatibility, ideal for on-the-go creators and outdoor recording pros.
GAIN CONTROL THAT WORKS FOR YOU - Smooth, practical 19~66dB gain range eliminates background noise even at max levels—no more guesswork or distortion.
INSTRUMENT READY HIGH IMPEDANCE - 1MΩ instrument input ensures zero signal loss or distortion, perfect for dynamic, condenser, and ribbon mics plus instruments.
SEAMLESS STUDIO TO STREAM SETUP - Three versatile outputs (XLR, TRS, TS) connect effortlessly to pro gear or live streaming rigs—flexibility that keeps you ahead.
CRYSTAL CLEAR SIGNAL EVERY TIME - Experience professional-grade noise reduction with an industry-leading -120dB EIN for pristine audio clarity.

The 2026 Upgraded RO03 Mic Preamp delivers ultra-low noise performance with a -120dB EIN, a practical 19~66dB gain range, and a high-impedance 1MΩ instrument input. Designed for dynamic, condenser, and ribbon microphones as well as instruments, it features versatile XLR, TRS, and TS outputs for seamless integration with professional audio interfaces and live streaming setups. Powered by USB Type-C for enhanced portability, this preamp is the perfect budget-friendly solution for millennial pros seeking studio-quality sound anywhere.

Specifications

ASIN	B0B6NG9S4C
Antenna Location	Streaming, Singing, Karaoke
Audible Noise	75 Decibels
Audio Sensitivity	66 Decibels
Best Sellers Rank	25,334 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 37 in Preamps
Box Contents	1 * RO03 Mic Preamp, 1 * User Manual, 1 * Power Cord, 1 * Power Adapter
Brand	Rodyweil
Brand Name	Rodyweil
Colour	Black,Transparent
Compatible Devices	Audio Interface, Audio Mixer, PA System, Amplifier, Speaker
Connectivity Technology	XLR
Connectivity technology	XLR
Connector Type	XLR
Connector type	XLR
Customer Reviews	4.2 out of 5 stars 126 Reviews
Enclosure Material	Metal
Frequency Range	20Hz 20kHz
Frequency Response	20 KHz
Impedance	1000000 Ohms
Item Dimensions	9 x 10 x 11 centimetres
Item Weight	400 Grams
Manufacturer	Rodyweil
Manufacturer Part Number	RO03
Microphone Form Factor	Handheld
Model Name	RO03
Model Number	RO03
Model name	RO03
Number of Channels	1
Number of Items	1
Polar Pattern	Unidirectional
Power Source	Corded Electric
Recommended uses for product	Streaming, Singing, Karaoke
Signal-to-Noise Ratio	120 dB
Special Feature	EIN‑120dBV, extremely low noise‑floor, Variable gain: 19~66db, 3 output simultaneous usable, with +4dbU & -10dbV output
Special feature	EIN‑120dBV, extremely low noise‑floor, Variable gain: 19~66db, 3 output simultaneous usable, with +4dbU & -10dbV output Special feature EIN‑120dBV, extremely low noise‑floor, Variable gain: 19~66db, 3 output simultaneous usable, with +4dbU & -10dbV output See more
UPC	616859152007
Unit Count	1.0 count

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¥17946

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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