TOA Electronics A-903MK2 30W 8-Channel Modular Mixer/Amplifier
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TOA Electronics A-903MK2 30W 8-Channel Modular Mixer/Amplifier, Auxiliary Output, External Mute Terminals, Dual Mute Bus, Direct Low-Impedance Output Mode

SKU: TOA903MK2UL MFR: A903MK2UL
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Key Features

  • Experience versatile sound with this 30W 8-channel mixer amplifier, perfect for installations.
  • Achieve crystal-clear audio with a wide frequency response, ideal for detailed sound reproduction.
  • Customize your sound with bass and treble controls on this TOA Electronics mixer amplifier.
  • Expand your setup using multiple input options; this amplifier accepts various input modules.
  • Enjoy reliable performance with built-in protection circuits, ensuring durability for years to come.
  • Easily integrate into existing systems using auxiliary outputs and external mute terminals.
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TOA Electronics A-903MK2 Specifications

  • Power requirement

    AC main, 120V, 60Hz

  • Power Consumption

    60 W

  • Output Power

    30 W RMS

  • Power Band Width

    (D): 20-20000Hz, 0.5% THD, (T): 50-20000Hz, 0.5% THD

  • Frequency Response

    (D): 20-20000Hz, +/- 1dB
    (T): 20-15000Hz, +/- 1dB
    (T): 20-20000Hz, +1dB, -3dB

  • T.H.D.

    0.02% at 1kHz, rated output

  • Input

    Eight Input port: Each port accept any input modules.
    One bridging input/output

  • Input Sensitivity/ Impedance

    Input port #1 to #8: 100mV / 10kOhm
    Bridging input/output: 100mV / 3.3kOhm

  • Preamp Out / Power Amp In

    1000mV into 600 Ohm / 1000mV, 10kOhm

  • Outputs (T): Transformer (D): Direct

    Main (T): 4 Ohm, 25 and 70 volts, balanced, Main (D): 8 Ohm unbalanced
    Aux: 10 kOhm, 1V

  • Output Regulation (1kHz)

    (D): Less than 0.5dB, no load to full load
    (T): Less than 1.0dB, no load to full load

  • S/N Ratio (Band Pass 20-20000Hz)

    Tone defeat switch on
    Master volume min: 90dB
    Master volume max: 77dB
    Power amplifier only: 105dB

  • Tone Controls

    Bass: +/-10dB at 100Hz, Treble: +/-10dB at 10kHz

  • Controls

    8 Input gain control
    1 master gain control
    1 bass control
    1 treble control
    1 power on/off switch
    1 tone defeat switch
    1 low-cut switch (60Hz, 6 dB/octave)

  • Indicators

    1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED

  • Protection

    Self-protection with AC fuse (inside)

  • Connectors

    Input No.1 to No.8: Card-edge connector bridging, mixer preamp, output, power amp. input, Aux Output: RCA phono jack
    Output: Screw-terminal strip
    Mute, Remote, VR: Screw-terminal strip
    AC Outlet: 3-pin grounding type
    AC power cord/plug: SJT, 3-prong type

  • Temperature range

    -10 deg. C to +60 deg. C (12 deg. F to 140 deg. F)

  • Dimensions (W x H x D)

    16.54 x 3.90 x 12.52" / 42.01 x 9.90 x 31.80cm

  • Weight

    17.20lbs / 7.80kg

  • UPC Code

    192223054523

About TOA Electronics A-903MK2

Experience the power and versatility of the TOA Electronics A-903MK2 30W 8-Channel Modular Mixer/Amplifier, a leading choice in the realm of installed sound system amplification. This advanced piece of audio equipment is renowned for its reliability and high performance, making it an ideal choice for critical applications such as paging and music distribution in airports, hospitals, and industrial sound systems.

Engineered for superior performance, the A-903MK2 delivers a wide frequency response, exceptionally low noise and distortion, and excellent output regulation. Its modular design features eight module slots, enabling you to customize your setup with ease. Choose from over fifty TOA plug-in modules, each offering a variety of features and connector types, to create a sound system that perfectly meets your needs.

The A-903MK2 also offers the flexibility to increase input capacity by connecting a second mixer or mixer/amplifier to the rear-panel Bridge In/Out jack. Its versatile outputs include transformer isolated 25 V, 70 V, and 4 ohm, plus a direct low-impedance mode for non-transformer operation.

This durable mixer/amplifier also supports multiple paging priorities, which can be easily configured using optional mute-type modules activated by external switch-closure or mute-send modules. The Pre-Out/Power-In jacks allow for the connection of external signal processing between the mixer and amplifier sections.

Additional features of the A-903MK2 include protection circuitry, an auxiliary output, bass/treble controls, and remote master volume terminals. Trust in the high-quality construction and advanced features of the TOA Electronics A-903MK2 30W 8-Channel Modular Mixer/Amplifier for all your sound system amplification needs.

TOA Electronics A-903MK2 Features

  • Advanced 8-channel modular mixer/amplifier for high-quality sound amplification
  • Wide frequency response, low noise, and minimal distortion for superior performance
  • Modular design with eight slots for customizable configurations from over fifty TOA plug-in modules
  • Versatile outputs including transformer isolated 25 V, 70 V, and 4 ohm, plus a direct low-impedance mode
  • Supports multiple paging priorities with optional mute-type modules
  • Additional features include protection circuitry, auxiliary output, bass/treble controls, and remote master volume terminals

Warranty Information

This product has a limited warranty of 60 months.

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Product Documents

User Manual

Key Features

  • Experience versatile sound with this 30W 8-channel mixer amplifier, perfect for installations.
  • Achieve crystal-clear audio with a wide frequency response, ideal for detailed sound reproduction.
  • Customize your sound with bass and treble controls on this TOA Electronics mixer amplifier.
  • Expand your setup using multiple input options; this amplifier accepts various input modules.
  • Enjoy reliable performance with built-in protection circuits, ensuring durability for years to come.
  • Easily integrate into existing systems using auxiliary outputs and external mute terminals.

What's in the box:

  • TOA Electronics A-903MK2 30W 8-Channel Modular Mixer/Amplifier
  • 4x Volume Control Security Knobs
  • TOA Electronics 5 Year Limited Warranty