The TOA P-912MK2 is a 120-watt commercial power amplifier designed for paging, background music, voice reinforcement, and other installed sound applications. As part of the TOA 900 Series, the P-912MK2 is designed for dependable operation in commercial audio systems where consistent output and reliable performance are important.

The amplifier provides transformer-isolated 25V and 70V outputs along with an 8Ω output, giving installers flexibility when designing distributed speaker systems or conventional low-impedance audio systems. A direct low-impedance output is also available for applications requiring a 4Ω speaker load.

The P-912MK2 includes one plug-in module slot, allowing the amplifier's input configuration to be customized for different system requirements. It also provides a direct input, selectable input sensitivity, a low-cut filter, and built-in protection circuitry.

With its combination of 120 watts of output power, flexible output options, and installer-friendly configuration, the P-912MK2 is well suited for commercial and institutional sound systems.

120W Output for Commercial Audio Systems

The P-912MK2 provides 120 watts RMS of output power, making it suitable for a variety of distributed and low-impedance speaker applications.

The amplifier supports:

• 25V transformer-isolated output
• 70V transformer-isolated output
• 8Ω transformer-isolated output
• 4Ω direct low-impedance output
• Balanced transformer-isolated output
• Unbalanced direct output

This flexibility allows system designers to use the same amplifier for different types of commercial audio installations.

Flexible Input Configuration

The P-912MK2 includes a modular input section that allows installers to configure the amplifier according to the needs of the system.

One plug-in module slot accepts compatible TOA input modules, while a separate direct input provides an additional connection option.

The input sensitivity can be switched between 100 mV and 1000 mV, allowing the amplifier to accommodate different source levels.

Important: Using the direct input disables the modular input port.

Designed for Paging and Background Music

The P-912MK2 is well suited for systems that need both voice and music reproduction, including:

• Commercial paging systems
• Background music
• Schools and educational facilities
• Offices and corporate buildings
• Retail stores
• Industrial facilities
• Hospitals and healthcare facilities
• Public buildings
• Transportation facilities
• Other distributed speaker systems

Its 120W output provides enough capacity for many small and medium-sized commercial audio zones, depending on the speaker load and system design.

Low-Cut Filter and Protection

A selectable low-cut filter helps reduce unwanted low-frequency content that can negatively affect paging and distributed audio systems.

The amplifier also incorporates protection circuitry designed to help protect the unit during abnormal operating conditions, including overload and short-circuit situations.

Front-panel indicators provide information about the amplifier's operating condition, including:

• Power
• Protection
• Signal
• Normal operation
• Peak level

Reliable Audio Performance

The P-912MK2 is designed to provide clean, consistent audio reproduction with low noise and distortion.

Key performance specifications include:

• 120W RMS output
• 0.01% THD at 1 kHz at rated output
• Up to 108 dB signal-to-noise ratio
• Wide frequency response
• Less than 0.5 dB direct-output regulation
• Less than 1.0 dB transformer-output regulation

These characteristics make the amplifier appropriate for applications where speech intelligibility and consistent system performance are important.

TOA 900 Series Modular Design

One of the advantages of the P-912MK2 is its modular architecture. The single input module slot allows the amplifier to be configured for different audio system requirements using compatible TOA modules.

This provides installers with more flexibility than a fixed-input amplifier and makes the P-912MK2 easier to integrate into a variety of commercial sound systems.

Key Features

• 120W RMS commercial power amplifier
• Part of the TOA 900 Series
• 25V and 70V transformer-isolated outputs
• 8Ω transformer-isolated output
• 4Ω direct low-impedance output
• One plug-in input module slot
• Direct input connection
• Selectable 100 mV / 1000 mV input sensitivity
• Low-cut filter
• Built-in protection circuitry
• Power, protect, signal, normal, and peak indicators
• 108 dB signal-to-noise ratio at 0 dBV input setting
• UL and cUL Listed
• TOA 5-year warranty

TOA P-912MK2 Specifications