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Welcome and thanks for purchasing the Grace Design m101 microphone preamplier and instrument DI. We
design and build our products to be completely reliable and easy to use, so you can concentrate on making
great recordings, not struggling with complicated equipment or dicult product manuals. While you will nd
the m101 is completely straightforward to use, we do ask that you spend a little time familiarizing yourself with
this product manual to help avoid any common user diculties.
In the event that you do encounter any technical diculties with this or any of our products, feel free to call us at
303-443-7454. Our oce hours are 9 to 5, Monday through Friday, MST, or you may email any technical ques-
tions to: info@gracedesign.com.
Also, please check out our web site (www.gracedesign.com) for the latest Grace Design product information,
owners manuals and technical documents.
Grace Design has been building audiophile-quality products for the recording industry over 15 years. The
technology in the m101 is the result of extensive listening, eld-testing and careful renement. Your new m101
preamplier represents a combination of absolutely pristine audio performance, robust mechanical construction
and bombproof reliability at a reasonable price. Regardless of what audio sources you plan to record, your m101
will faithfully serve as an invisible link between your microphone or instrument and recording device.
We sincerely hope our products help you achieve a new level of excellence in your work!
The Grace Design Team
CONTENTS
IMPORTANT SAFETY INFORMATION 3
GENERAL 3
SAFETY MARKING SYMBOLS 3
SERVICE INFORMATION 3
FEATURES 4
FRONT PANEL FEATURES 4
m101 CONNECTIONS 5
OPERATING THE m101 6
BASIC OPERATION 6
USING ThE TRIM CONTROL 7
USING RIBBON MIC MOdE 7
USING ThE hPF 7
RACKMOUNTING ThE m101 7
CABLE DIAGRAMS 8
BASIC WIRING DIAGRAM 8
SPECIFICATIONS 9
WARRANTY INFORMATION 10
MANUAL REVISIONS 11