The Rane ML 1 Mic / Line Preamplifier provides the answer when you just need a preamplified pair. Go from either dynamic, condenser or electret microphones to line-level with a minimum of noise, distortion, and hassle. At the same time the ML 1 can convert those mics, or a stereo line source, to a digital output of your choice: AES3, S/PDIF coaxial or optical.
The ML 1’s rear panel provides 48 V switchable Phantom Power with an indicator LED. Each channel has Mic / Line input selection with Gain trims between 18 dB and 66 dB. Input signal and Output Signal / Overload LEDs help set levels to other equipment whether you are looking at the front or the back panel. Inputs and outputs let you choose between balanced XLR or Euroblock connectors. The Euroblocks accept 22 to 12 guage wire.
The ML 1 utilizes one of the finest ultra low noise amplifier designs available. Featuring a true differential input with high common-mode rejection, use of the ML 1 guarantees performance usually found only in mixing consoles costing thousands of times as much.
A security cover for the rear panel Gain and Mic / Line
switches section is included for those set-and-forget installations. The
internal power supply operates almost anywhere in the world
with the proper IEC-C5 cord.
BLOCK DIAGRAM

Uses and applications for the ML 1 should be obvious. But to spark your imagination, these words on using the ML 1 might not be wasted.
MIXING
The ML 1 is fills the need for adding a pair of microphone channels
to line-level mixers, such as the Rane SM 82S.
DIGITAL RECORDING
Another handy use for the ML 1 is in recording applications.
Many popular products (including most computer sound cards)
do not have a high enough quality mic preamp to suit the resolution
of the digital processing electronics. Such irony. Using the
ultra low noise ML 1 to bring the mic inputs up to extremely
high quality line-level or digital signal is an easy and affordable
solution for this dilemma. No garbage in; no garbage out.
MICROPHONE TYPES
The available gain and large input range of the ML 1 allows the
use of virtually any type of microphone. True 48V phantom
power guarantees the ML 1 works with every microphone. The
better the mic, the better the ML 1 sounds.

The versatility of the popular Rane RPM 88 increases to 10 inputs using an ML 1 with a single cable: ML 1 digital out to RPM 88 digital in.

The ML 1 adds the additional stereo input the RPM 44 needs without the added cost of upgrading to an RPM 88 in this restaurant system.

The ML 1 adds the mic preamp and extra input needed for the RPM 26z to do its duty as a paging system, with room for a second mic if needed.
If the above doesn't answer your question, or it's urgent...
Phone 425-355-6000, 8 AM to 5 PM PST, Monday through Friday.
If it's less urgent, you can email the factory.
For local service within the USA, find a service center.