Toa Electronics A-906MK2 60W 8-Channel Modular Mixer/Amplifier

BH #TOA906MK2UL • MFR #A-906MK2 UL
Toa Electronics A-906MK2 60W 8-Channel Modular Mixer/Amplifier
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Toa Electronics A-906MK2 Overview

  • 1Description
  • 2Modular Output 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-906MK2 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-906MK2 is designed for high performance with a low self-noise, a wide frequency response, and excellent output regulation. This 60W 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 Output Design

Eight expansion output 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-906MK2 Specs

Output Power60W
Damping FactorNot Specified by Manufacturer
Input SensitivityModule Inputs: Varies According to Installed Modules
Bridging Input: 100mV
Input ImpedanceModule Inputs: Varies According to Installed Modules
Bridging Input: 3.3 k ohms
GainNot Specified by Manufacturer
Frequency Response20Hz - 20kHz
Signal-to-Noise RatioNot Specified by Manufacturer
Total Harmonic Distortion (THD)0.02%
Input Connections8 x Input Module Slots
1 x RCA Bridging In/Out
Output Connectors8 ohm, 25V, and 70V Balanced Screw Connectors
4 ohm Unbalanced Screw Connector
RCA Aux Output
Controls Front PanelPower Button, Master Volume Control, Individual Channel Volume Controls, Bass and Treble Controls, Low Cut Switch, and Tone Defeat Switch
Controls (Rear)Mode Switch
IndicatorsSignal, Normal, Peak, Power, and Protect LEDs on Front Panel
CoolingNot Specified by Manufacturer
Power Consumption100W
Dimensions (WxHxD)16.5 x 3.9 x 14.1" (419 x 99 x 358 mm)
Weight21.2 lbs (9.6 kg)
SpecialtiesDelayed Output Connection at Power On
Protection Circuitry for Overload, Overheating, and Short Circuit
Rear-Panel AC Outlet for Powering External Device
Packaging Info
Package Weight28.85 lb
Box Dimensions (LxWxH)22.5 x 19 x 7"
See any errors on this page? Let us know


why do the speakers have a background buzz?

why do the speakers have a background buzz?
Asked by: Ken
It could be a number of things causing buzzing in your speakers. You will want to make sure that you are using speaker cable first. Then make sure that your power source is properly grounded. And make sure that you are using the correct terminal for your speakers (4 ohm, 8ohm, 70v, 25v).
Answered by: John
Date published: 2019-07-22


How do I connect 2 speakers up to the amp
Asked by: Eric C.
This Amp is a 70V output amp, that enable you to connect multiple speakers in parallel. you will need to follow the polarity on the Amp and the speakers, the speakers also have to be 70V speakers.
Answered by: Toa Electronics Expert
Date published: 2019-10-31
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