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

Product ID: 504016084

Details

Brand
Rodyweil
Colour
Black
Compatible devices
Amplifier
Connectivity technology
XLR
Connector type
XLR
Included components
1 * Power 1 *

🔇120dB EIN ultra low noise

🔌Type-C power for ultimate portability

🎚️19~66dB variable gain range

€ 96.32

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Description

🎤 Elevate your sound game with zero noise, max gain, and total versatility!

NEXT GEN POWER DESIGN - USB Type-C powered for enhanced portability and compatibility, ideal for on-the-go creators and modern studios.
INSTRUMENT READY INPUT - 1MΩ high-impedance TS input perfectly matches guitars and other instruments for pristine sound capture.
OPTIMIZED GAIN CONTROL - Real-world usable gain from 19 to 66dB ensures powerful amplification without noise spikes or distortion.
VERSATILE CONNECTIVITY - Three simultaneous outputs (XLR, TRS, TS) seamlessly integrate with studio gear, live streaming setups, and consumer audio devices.
CRYSTAL CLEAR SIGNAL BOOST - Achieve professional-grade clarity with an ultra-low noise floor of -120dB EIN, eliminating distracting background hiss.

The 2026 Upgraded RO03 Mic Preamp delivers professional-grade audio clarity with an ultra-low noise floor of -120dB EIN and a practical gain range of 19-66dB. Designed for dynamic, condenser, and ribbon microphones as well as instruments, it features a high-impedance 1MΩ input for distortion-free instrument recording. Equipped with balanced XLR and TRS outputs plus an unbalanced TS output, it supports diverse studio and live streaming setups. Powered via USB Type-C, it offers enhanced portability and compatibility, making it the perfect tool for millennial pros seeking premium sound on a budget.

Specifications

ASIN	B0B6NG9S4C
Antenna Location	Karaoke, Singing, Streaming
Audible Noise	75 Decibels
Audio Sensitivity	66 Decibels
Best Sellers Rank	35,846 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 52 in Preamps
Box Contents	1 * Power Adapter, 1 * Power Cord, 1 * RO03 Mic Preamp, 1 * User Manual
Brand Name	Rodyweil
Colour	Black,Transparent
Compatible Devices	Amplifier
Connectivity Technology	XLR
Connector Type	XLR
Customer Reviews	4.2 4.2 out of 5 stars (128)
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
Number of Channels	1
Number of Items	1
Number of Packs	1
Polar Pattern	Unidirectional
Power Source	Corded Electric
Signal-to-Noise Ratio	120 dB
Special Feature	3 output simultaneous usable, EIN‑120dBV, extremely low noise‑floor, Variable gain: 19~66db, with +4dbU & -10dbV output
UPC	616859152007
Unit Count	1.0 count

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€ 96.32

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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