Detail 01
Three simultaneous outputs
One balanced microphone signal can feed three destinations at the same time.

Independent shopping perspective
Radial Engineering’s PromS2 is a passive splitter that takes one balanced microphone signal and sends it to three outputs at once, with no power required. Its Eclipse ET-MS10 transformer is designed for wide frequency response, strong signal handling, and more than 115 dB of common-mode noise rejection. That makes it a practical routing tool when one stage or studio source must feed several destinations, including separate consoles, preamps, or a broadcast feed.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
One balanced microphone signal can feed three destinations at the same time.
Detail 02
No power is required for operation.
Detail 03
Uses a nickel-laminated-core transformer for wide frequency response and signal handling.
Detail 04
Helps keep hum and buzz from ground loops and stray DC currents to a minimum.
Detail 05
The construction is designed to protect switches and connectors in touring environments.
Detail 06
Up to eight units can be rack-mounted using the Radial J-Rak.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. It is passive and operates without power.
It accepts one balanced microphone signal and sends it to three outputs simultaneously.
Yes. One listed application is splitting a live-stage signal to supply a broadcast feed.
Its transformer provides more than 115 dB of common-mode noise rejection to minimize noise from ground loops and stray DC currents.