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Toa Electronics A-903MK2 30W 8-Channel Modular Mixer/Amplifier

BH #TOA903MK2UL • MFR #A-903MK2 UL
Toa Electronics A-903MK2 30W 8-Channel Modular Mixer/Amplifier
Key Features
  • For Background Music, Paging, On-Hold
  • For Education, Transportation, Medical
  • 8 Slots for Line or Mic Input Modules
  • 4/8 Ohms & 25/70V Operation
From the TOA 900 series of mixer/amplifiers, the A-903MK2 is a customizable unit ideal for background music, paging, on-hold messages, and other applications in hospitals, airports, schools, and other similar venues. The A-903MK2 is designed for high performance with a low self-noise, a wide frequency response, and excellent output regulation. This 30W unit features 8 input channels that accept any combination of TOA's plug-in modules for ultimate customizability. The front panel features a master volume control and individual channel volume controls as well as bass and treble controls.
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$515.90
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Toa Electronics A-903MK2 Overview

  • 1Description
  • 2Modular Input Design
  • 325 and 70 Volt Operation
  • 4Paging Priority Modes
  • 5External Mute Terminals
  • 6Remote Master Volume Terminals
  • 7Low-Cut Filter
  • 8Auxiliary Output
  • 9Insert Jacks
  • 10Delayed Power Up

From the TOA 900 series of mixer/amplifiers, the A-903MK2 is a customizable unit ideal for background music, paging, on-hold messages, and other applications in hospitals, airports, schools, and other similar venues. The A-903MK2 is designed for high performance with a low self-noise, a wide frequency response, and excellent output regulation. This 30W unit features 8 input channels that accept any combination of TOA's plug-in modules for ultimate customizability. The front panel features a master volume control and individual channel volume controls as well as bass and treble controls.

Input capacity may be increased by connecting another mixer or mixer/amplifier to the bridge in/out jack. The unit features transformer-isolated outputs, and a direct output mode if non-transformer operation is desired.

Modular Input Design
Eight expansion input slots house modules that provide line or microphone level connections.
25 and 70 Volt Operation
The mixer/amplifier is capable of 70V operation, suitable for long speaker runs throughout offices, airports, hospitals, restaurants, etc.
Paging Priority Modes
A Dual Mute Bus permits multiple levels of paging priority, using optional mute-type modules.
External Mute Terminals
Accommodate external mute switchers for remote mute operation.
Remote Master Volume Terminals
Enable remote master volume control.
Low-Cut Filter
A master low-cut filter switch eliminates low-frequency noise and rumble.
Auxiliary Output
The auxiliary output accommodates an external recording device, mixer, and more.
Insert Jacks
Insert jacks accommodate outboard signal processing.
Delayed Power Up
A power up delay feature protects the outputs and connected speakers from damage caused by surges during abrupt amplifier power up.

Toa Electronics A-903MK2 Specs

Key Specs
Number of Channels
8
Amplifier Power Rating
30 W
Audio I/O
1x RCA Unbalanced Aux Output
Digital Audio I/O
No
Network I/O
No
USB I/O
No
Amplifier
Form Factor/Type
Tabletop (Rack-Mountable with Optional Hardware)
Number of Channels
8
Amplifier Power Rating
30 W
Performance
Protections
Overload, Power-On Delay, Short Circuit, Thermal
Frequency Response
20 Hz to 20 kHz
Input Sensitivity
Bridging:
100 mV
I/O Impedance
Bridging Input:
3.3 Kilohms
SNR
105 dB (Power Amp Only)
THD
0.02%
Signal Processing
EQ
2-Band
Filters
High-Pass
Connectivity
Audio I/O
1x RCA Unbalanced Aux Output
Digital Audio I/O
No
Network I/O
No
Other I/O
1x RCA Bridging In/Out
Speaker Outputs
1x Barrier Strip Balanced 8-Ohm/25 V/70 V
1x Barrier Strip Unbalanced 4-Ohm
Number of Module Slots
8
USB I/O
No
Media/Memory Card Slot
No
Power
AC Input Power
120 VAC, 50 / 60 Hz
Power Consumption
60 W
AC Outlet
Yes
Physical
Display & Indicators
1x LED (Signal)
1x LED (Status)
1x LED (Protect)
Operating Temperature
12 to 140°F / -11 to 60°C
Dimensions
16.5 x 3.9 x 12.5" / 419.0 x 99.0 x 318.0 mm
Weight
17.2 lb / 7.8 kg
Packaging Info
Package Weight
23.8 lb
Box Dimensions (LxWxH)
22.6 x 17.5 x 6.4"

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