News, Tips & Reviews
B&H Gift Cards
The Professional's Source Since 1973
Ask Our Experts800-952-1815
Hello, Log InAccount & Orders
My Cart
Video Chat with a Pro Audio Expert - Live
Home

Radial Engineering ProMS2 Passive Microphone Splitter

BH #RAMSP • MFR #R800 1122
4 reviews
Print
Radial Engineering ProMS2 Passive Microphone Splitter
Key Features
  • Splits 1 Input to 3 Outputs
  • Passive Design Requires No Power
  • Eclipse ET-MS10 Transformer
  • Steel Body
Allowing you to send a single microphone or DI signal to up to 3 separate destinations, the ProMS2 Passive Microphone Splitter from Radial Engineering can be used in the studio to send a mic to multiple preamps for auditioning and live to send one source to multiple mixers or to supply a broadcast feed. It is a passive device, therefore requiring no power for operation. The Eclipse ET-MS10 transformer is designed to provide a flat frequency response while its RF filtering helps keep your signal interference free. The device features 14-gauge steel construction to stand up to live use.
More Details
In Stock
No Store Display
$154.99
Add to Cart
Free 2-Day Shipping
Protect Your Gear
Add a protection plan from $14.99
See Options
Ask an Expert
800-952-1815

Radial Engineering R800 1122 Overview

Allowing you to send a single microphone or DI signal to up to 3 separate destinations, the ProMS2 Passive Microphone Splitter from Radial Engineering can be used in the studio to send a mic to multiple preamps for auditioning and live to send one source to multiple mixers or to supply a broadcast feed. It is a passive device, therefore requiring no power for operation. The Eclipse ET-MS10 transformer is designed to provide a flat frequency response while its RF filtering helps keep your signal interference free. The device features 14-gauge steel construction to stand up to live use.

High performance Eclipse transformer for optimal signal transfer
Equipped with direct, isolated and auxiliary outputs for 3-way split
May be rack-mounted in the J-Rak for multi-channel use
Rugged 14-gauge steel construction for added durability and shielding
UPC: 676101040827

Radial Engineering R800 1122 Specs

Audio Circuit Type
Passive
Input Impedance
2.5 KΩ, unbalanced
Output Impedance
140 KΩ, balanced
Frequency Response
20 Hz to 20 kHz (+0 dB -1 dB)
Gain
-0.5 dB
Dynamic Range
>140 dB
Total Harmonic Distortion
0.001%
Noise Floor
-140 dB
Maximum Input
+26 dBu
Phase Deviation
1° @ 20 Hz
Intermodulation Distortion
0.003%
CMRR
-115 dB at 60 Hz
Transformer
Eclipse ET-MS10
Pad
-30 dB
Ground Lift
Disconnects pin-1 at both XLR outputs
XLR Configuration
AES standard pin-1 ground, pin-2 (+), pin-3 (-)
Connectors
XLR-F in, XLR-M direct; direct-2; isolated outputs
Construction
14 gauge steel chassis & outer shell
Power
Passive, no power required
Operating Conditions
For use in dry locations only between 41 to 104°F (5 to 40°)
Dimensions
3.3 x 5.0 x 2" (84 x 127 x 48 mm)
Weight
1.55 lb (0.7 kg)
Packaging Info
Package Weight
1.7 lb
Box Dimensions (LxWxH)
6.25 x 4.15 x 3"

Radial Engineering R800 1122 Reviews

Plug & Play & No Signal Loss!

By James
Rated 5 out of 5
Date: 2025-06-18

Great Plug & Play Setup with No Signal Loss! This is just what I needed. Awesome Plug & Play Setup using saved presets! This means a lot when it’s Cruch-Time! Flawless for my new setup! From Sennheiser Wireless… to — ProMS2 — to — MixPre-3 — to — EVERSE 8 No signal mixing/crossing that I’m aware of.

XLR cables wouldn't stay connected

By Mike S
Rated 1 out of 5
Date: 2015-07-17

I was advised by B&H to purchase this product to split a microphone signal from a DJ at live events. However, when testing it the night before a wedding, I noticed that there is no lock for the XLR cables and if the cable moves even a millimeter, then the audio will stop completely. I had to spend about a minute fiddling with the cables just to get them in the right spot and once I did they sounded fine, but then if the device is even touched it will significantly affect the audio. I tried multiple brand new XLR cables and they all had the same result. I had heard great things about this brand but this device does not seem to be very well made and I would not use it for a live event if there's even a chance that someone might touch even just the top of it.

See any errors on this page?

Would this work to split an audio signal from a ...

Would this work to split an audio signal from a overhead boom mic to two separate cameras? Cameras would be set to P48. Thanks
Asked by: Tim
The Radial Engineering ProMS2 Passive Microphone Splitter can send the signal to 2 separate cameras with XLR input connectors.
Answered by: Daniel O
Date published: 2025-02-17
  • y_2026, m_6, d_7, h_12CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.46
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_1
  • loc_en_US, sid_1081059, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo
Whatever You Need, We've Got It