THE TOA 900 SERIES are widely
recognized as the industry standard
in installed sound system amplifi-
cation. When reliability and per-
formance are critical – such as in
paging and music distribution for
airport, hospital, and industrial
sound systems – you can count on
the TOA 900 Series to perform
consistently, day-in and day-out.
The M-900MK2 Mixer/Pre-amplifier
is engineered for high performance
with wide frequency response,
very low noise and distortion,
and excellent output regulation.
Eight module slots allows you to
easily configure custom configu-
rations using TOA plug-in modules
with an extensive array of features
and connector types. With the
rear-panel Bridge In/Out jack, you
can increase the input capacity by
connecting a second mixer or
mixer/amplifier. Outputs include
a balanced, transformer-isolated,
line-level output for connection
to an external amplifier and an
unbalanced auxiliary output.
Multiple paging priorities are
easily configured using optional
mute-type modules activated by
external switch-closure or mute-
send modules. Other features
include bass/treble controls and
remote master volume terminals.
The M-900MK2 is UL and cUL
Listed and carries a five year
warranty.
Modular Eight Channel Mixer/Pre-
amplifier for paging, background/
foreground music distribution and
music/messaging-on-hold.
Proven TOA Quality and Reliability
Engineered for High Performance
with wide frequency response, very
low noise and distortion, and excel-
lent output regulation.
Eight Module Slots accept any combi-
nation of TOA plug-in modules for cus-
tom system configurations.
Balanced, Transformer-Isolated
Output with selectable impedance,
screw terminal connector and protec-
tive cover plate.
Dual Mute Bus permits multiple levels
of paging priority using optional
mute-type modules.
External Mute Terminals for activating
mute function with external switch-
closure.
Remote Master Volume Terminals for
control with an external 10k ohm
linear-taper potentiometer.
Individual Channel and Master
Volume Controls
Bass/Treble Tone Controls with tone
defeat switch.
Auxiliary Output for connecting an
external mixer or recording device.
Bridging Input/Output for input
expansion or recording device.
Normal, Clip, Power, Protect, and
Signal Indicators provide unit status.
Rear Panel AC Convenience Outlet for
powering external equipment.
Turn-On Delay disconnects output
during power-up.
Over-current and Thermal Protection
Circuitry prevents potential damage
from overload, short-circuit or over-
heating.
Volume Control Security Knobs
Included (4)
Optional Rack-Mount Kit
UL / cUL Listed
Five Year Warranty
H
IGHLIGHTS
O
PTIONAL
A
CCESSORIES
Plug-in Modules (see individual module specifications)
MB-25B Rack-mount Kit (2 RU)
PF-511 Perforated Rack Panel (2 RU)
YA-920 Volume Control Security Knob
900 Series Module Guide available from http://www.toaelectronics.com
900
S
ERIES
M-900MK2
M
IXER
/
P
RE
-A
MPLIFIER
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