• TOA M-900MK2 8-Channel Mixer / Preamplifier
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TOA M-900MK2 UL 900 Series Rack-Mount Mixer Preamplifier

TOA M-900MK2 UL 900 Series Rack-Mount Mixer Preamplifier

SoundPro Item: 58451 | Part Number: M-900MK2 UL

$631.00
$780.00 $631.00
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MSRP: $780.00 | MAP: $631.00

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  • Eight Module Ports Accept Optional Plug-In Inputs For System Flexibility
  • Balanced Main Output And Auxiliary Output Support Multiple Routing Configurations
  • Onboard Bass And Treble Controls With Tone Defeat For Flat Signal Path Option
  • Self-Protection Circuit And AC Fuse Guard Against Electrical Faults
  • Remote Volume Control And Mute Terminals Enable Discreet System Integration
  • Five-LED Indicator Panel Provides At-A-Glance System Status Monitoring
  • UL Listed For Compliant Installation In Commercial And Institutional Environments
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The TOA M-900MK2 UL is a rack-mount mixer preamplifier built for installed audio environments where reliability, signal control, and system flexibility are non-negotiable. Supporting up to eight independent input ports via card-edge module connectors, the unit accommodates a range of optional plug-in input modules, allowing integrators to tailor the signal chain to the specific demands of each installation. A balanced main output and auxiliary unbalanced output give system designers multiple routing options without added infrastructure.

With a rated output of +4 dBm and a peak of +20 dBm, the M-900MK2 UL delivers clean, stable gain across a 20 Hz to 20 kHz frequency response at plus or minus 1 dB. Total harmonic distortion holds at 0.01% at 1 kHz under rated output conditions, making it a dependable signal source for paging systems, multi-zone distributed audio, and commercial background music installations. Onboard tone controls provide plus or minus 10 dB of bass and treble adjustment, and a tone defeat switch allows flat signal path operation when downstream EQ is preferred.

Compared to fixed-input mixers in the same tier, the modular input architecture of the M-900MK2 UL reduces the need for external adapters or format converters, keeping rack space efficient and signal paths short. The unit ships UL-listed for U.S. installations and operates from standard 120 V AC mains. An optional MB-25B rack mounting bracket is available separately for clean rack integration.

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Specifications

Electrical
Power Source
AC Mains, 120 V, 60 Hz
Power Consumption
18 W
Audio
Rated Output
+4 dBm, +20 dBm (max.)
Power Bandwidth
30 - 20,000 Hz, +20 dBm 0.5% THD 25 - 20,000 Hz, +18 dBm 0.5% THD
Frequency Response
20 - 20 kHz, +/-1 dB
Total Harmonic Distortion
0.01% at 1 kHz, rated output
Signal To Noise Ratio
Master volume min: 90 dB (Band Pass 20 - 20,000 Hz) Master volume max: 77 dB (Band Pass 20 - 20,000 Hz)
Tone Control
Bass: +/-10 dB at 100 Hz, Treble: +/-10 dB at 10 kHz
Output Regulation (1 kHz)
Less than 1.5 dB, no load to full load
Connectivity
Input
Eight Input Ports (card-edge connector, each accepts any input module), One Bridging Input/Output
Input Sensitivity/Impedance
Input Port #1 to #8: 100 mV/10 kOhm; Bridging Input/Output: 100 mV/3.3 kOhm
Output
Main: Balanced, 150/600 Ohm; AUX: Unbalanced, 10 kOhm, 0 dBm
Connectors
Bridging/Aux Output: RCA phone jack; Output: Screw-terminal strip; Mute/Remote VR: Screw-terminal strip; AC power cord/plug: SJT 3-prong; AC outlet: 3-pin grounding type
Controls
Input Controls
8 Input gain controls
Master Controls
1 Master gain control, 1 Bass control, 1 Treble control, 1 Power ON/OFF switch, 1 Tone defeat switch
Indicators
1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED
Protection
Self-protection with AC fuse (inside)
Construction
Finish
Black
Operating Temperature
-10 C to +60 C (12 F to 140 F)
Dimensions
Dimensions
420 x 99.1 x 307.5 mm (16.54" x 3.90" x 12.11")
Weight
Weight
5.3 kg (11.68 lbs)
Included Items
Included Accessories
Volume control covers (YA-920) x 4
Certifications
Listing
UL Listed
Identifiers
Optional Accessories
Rack mounting bracket (MB-25B)

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