Welcome
The m9XX, a collaborative effort between Grace Design and Massdrop, represents a new level of
performance for compact, personal audio playback devices. With zero Ohm output impedance
headphone outputs and a remarkable USB bus power supply design, the m9XX delivers
unprecedented playback performance with compact, stylish ergonomics.
Setup and operation is of the m9XX simple. While mostly plug and play, there are a few operational
concepts that are helpful to understand. We encourage you to read this manual thoroughly to
familiarize yourself with the unit so you can use and enjoy it to its fullest extent.
If you have any questions, please visit our website for more information - www.gracedesign.com,
or feel free to call us directly at 1.303.823.8100. We’d love to hear from you!
Page 3 of 15
m9XX
TOSLINK
L
R
5.0V, 2A
USB 2.0
MADE BY GRACE DESIGN
IN LYONS, COLORADO USA
m9XX
LEFT HEADPHONE
JACK
RIGHT HEADPHONE
JACK
7-SEGMENT
DISPLAY
LINE OUT
JACKS
TOSLINK
INPUT
USB #1
DATA+BUS POWER
USB #2
HIGH POWER DC
VOLUME CONTROL
WITH PUSH-BUTTON
