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Toa Electronics A-912MK2 120W 8-Channel Modular Mixer/Amplifier

BH #TOA912MK2UL • MFR #A-912MK2 UL
4 reviews
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Toa Electronics A-912MK2 120W 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-912MK2 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-912MK2 is designed for high performance with a low self-noise, a wide frequency response, and excellent output regulation. This 120W 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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Toa Electronics A-912MK2 Overview

From the TOA 900 series of mixer/amplifiers, the A-912MK2 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-912MK2 is designed for high performance with a low self-noise, a wide frequency response, and excellent output regulation. This 120W 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-912MK2 Specs

Key Specs
Number of Channels
8
Amplifier Power Rating
120 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
120 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
180 W
AC Outlet
120 VAC / 500 W Max Load / 4 A Max Draw (Unswitched)
Physical
Display & Indicators
1x LED (Signal)
1x LED (Status)
1x LED (Protect)
Operating Conditions
12 to 140°F / -11 to 60°C 
Dimensions
16.5 x 3.9 x 14.1" / 419.0 x 99.0 x 358.0 mm
Weight
25.1 lb / 11.4 kg
Packaging Info
Package Weight
34.6 lb
Box Dimensions (LxWxH)
20.5 x 18 x 8"

Toa Electronics A-912MK2 Reviews

Great product

By Diane
Rated 5 out of 5
Date: 2019-04-03

Awesome people that work with and their products are really fantastic

... great product, best price

By Kiplinger Arena
Rated 5 out of 5
Date: 2009-08-18

Hopefully the amp will sound this great 5 years from now also, the humidity and dirt take a toll on electronic equiptment in the horse arena

See any errors on this page?

Are the XLR modules included?

Are the XLR modules included?
Asked by: Danny
XLR modules are not included with the Toa Electronics A-912MK2. They can be found here: https://bhpho.to/40gEUzM
Answered by: Calvin M
Date published: 2023-03-18

question

does this model supply phantom power required by some mikes?
Asked by: Anonymous
The TOA A-912MK2 is a modular unit that requires the purchase of individual input modules for mic connectivity. The M-01F features a female XLR mic input that does supply up to 22VDC phantom power.
Answered by: Jeff P.
Date published: 2018-08-27

question

Why Is there no 70 volt output on my p912mk2?
Asked by: Anonymous
I purchased this amplifier a few months ago and it does have a 70V. output. It's the next terminal above the 25V. terminal. You can also see it on the picture of the rear of the amp. If you still don't see it then the manufacturer may have changed something. Hope this helps, John.
Answered by: John M.
Date published: 2018-08-27

question

How do I get more paging volume?
Asked by: Anonymous
If you've maxed out the volume knob on the input and master output, there are few things you can look at. Consider what the speaker taps are set to, also speaker sensitivity has a direct impact on how loud the speaker will sound. Take a look at the source. Is it mic or line? All of these things affect the level. If you've addressed these concerns, and your system isn't loud enough, chances are you may need more power; either on the speaker side, or the amp side.
Answered by: Jacob C.
Date published: 2018-08-27

question

I'm not getting any signal. Anything I can do?
Asked by: Anonymous
That doesn't give me much to go on. What modules do you have installed? What are you using for a source? Is the unit powering on? Did you check the fuses? What are you using it for? I don't know if you are a newbie or a audio professional, so I don't really know where to start. I'm not an audio pro myself, but did install one of these recently, so, if you can give me as much information as you can maybe I can help you out.
Answered by: Mari H.
Date published: 2018-08-27
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