Nomenclature

Front Panel

Power Switch	Input Volume Controls
Applies line power. Two-position push button	Adjust gain of input #1 ~#8 respectively.
switch for on/off modes.
	Bass Control
Power Indicator LED	Modifies bass response. Turn clockwise to boost,
Green LED lights when the power is switched	counter-clockwise to attenuate the bass
"ON".	response. Tone is flat at center.

Signal Indicator LED

Green LED lights when more than –30 dB signal

level is fed to the inputs by means of the input and master volume controls.

Normal Indicator LED

Yellow LED lights when fed to the proper signal

level.

Peak Indicator LED

Red LED lights when amplifier approaches clipping level. If steady lit, the input level control should be turned down until the LED flashes only intermittently.

Protection Indicator LED

Remains lit for about 5 seconds after power

switch is turned ON.

Treble Control

Modifies treble response. Turn clockwise to boost, counter-clockwise to attenuate the treble response. Tone is flat at center.

Tone Switch

Selects ON/OFF of the BASS and TREBLE controls. When slided to OFF, BASS and TREBLE controls are active. When slided to ON, they become inactive to make tone flat.

Low-Cut Switch

Cuts off unnecessary low frequency.

Master Volume Control

Adjusts overall gain of the unit.

–4–

A-903MK2, A-906MK2, A-912MK2 specifications

TOA Electronics is renowned for its commitment to high-quality audio solutions, and the A-912MK2, A-906MK2, and A-903MK2 mixers exemplify this dedication through their innovative features and technologies. These mixers are ideal for various applications, including commercial spaces, educational institutions, and houses of worship.

The A-912MK2 is a powerful 120W amplifier that stands out due to its advanced signal processing capabilities. It features an 8-channel input, allowing for versatile connection options to accommodate various audio sources. The amplifier includes a built-in priority paging function that automatically lowers the music volume when a paging input is activated. This ensures that important announcements are heard clearly without compromise on background music levels. Additionally, the A-912MK2 incorporates a high-quality digital signal processor (DSP) that enhances audio quality and provides feedback suppression, ensuring clarity in vocal applications.

The A-906MK2, on the other hand, is a compact yet robust 60W mixer amplifier. One of its key features is the dual-zone output capability, making it perfect for complex audio environments where sound needs to be directed to multiple areas. This model offers multiple input options, including both microphone and line-level inputs, and features tone control for individualized sound shaping. The A-906MK2 is particularly appreciated for its ease of use, with intuitive controls that allow for quick adjustments on the fly.

Finally, the A-903MK2 rounds out the trio as a reliable 30W amplifier designed for smaller settings or intimate gatherings. It excels with its straightforward design, featuring a built-in MP3 player providing additional playback options directly from a USB stick or SD card. Like its counterparts, the A-903MK2 supports multiple input formats and includes essential features such as volume control, bass and treble adjustments, and phantom power for condenser microphones.

All three models embrace TOA’s philosophy of creating user-friendly products without sacrificing performance. They are crafted with durable materials for longevity and reliability in professional settings. Furthermore, these mixers are equipped with various safety features, including thermal protection and overload warning indicators, ensuring safe operation under varying conditions.

In summary, the A-912MK2, A-906MK2, and A-903MK2 by TOA Electronics are exceptional tools for delivering high-quality audio experiences across diverse environments. Their innovative features, reliability, and sound engineering make them excellent choices for professionals seeking performance without compromising on usability.