The A-903MK2 Mixer Power Amplifier controls and mixes up to eight independent input signals. The Mixer Power Amplifier delivers up to 30 watts of output power. Optional plug-in modules are available for use with mixer power amplifier to provide versatility for a wide range of operating applications.

The A-906MK2 Mixer Power Amplifier controls and mixes up to eight independent input signals. The Mixer Power Amplifier delivers up to 60 watts of output power. Optional plug-in modules are available for use with mixer power amplifier to provide versatility for a wide range of operating applications.

The A-912MK2 Mixer Power Amplifier controls and mixes up to eight independent input signals. The Mixer Power Amplifier delivers up to 120 watts of output power. Optional plug-in modules are available for use with mixer power amplifier to provide versatility for a wide range of operating applications.

The P-906MK2 Power Amplifier delivers up to 60 watts of output power. The power amplifier has an input port to accept one plug-in module.

The P-912MK2 Power Amplifier delivers up to 120 watts of output power. The power amplifier has an input port to accept one plug-in module.

The P-924MK2 Power Amplifier delivers up to 240 watts (Direct)/220 watts (Transformer) of output power. The power amplifier has an input port to accept one plug-in module.

The P-924MK2 Power Amplifier delivers up to 240 watts (Direct)/220 watts (Transformer) of output power. The power amplifier has an input port to accept one plug-in module.

The TOA W-906A and W-912A Mixer Power Amplifiers control and mix up to six independent input signals plus two inputs with use of expanding kit. The W-906A delivers up to 60 W of output power and the W-912A 120 W. Optional accessory modules are available for use with the W-906A and W-912A to provide versatility for a wide range of operating applications. Edge connectors at the bottom of the front panel permit the selection of the TOA plug-in modules. (Please contact your local TOA dealer for details on TOA plug-in modules.) The W-906A and W-912A have a built-in one-octave graphic equalizer with 9 bands to tailor sound system frequency response to room acoustics, reducing feed-back tendencies and improving intelligibility. A built-in compressor circuit is provided to protect the output level from distortion as a result of excessive input and keeps it constant. Compressor's threshold level can be adjusted. The W-906A and W-912A Mixer Power Amplifiers have output terminals to match 4 or 8 speaker systems, or speaker distribution system may be connected to the 25 or 70 V terminals. User's (blank) space is provided for additional functions to be made by the customers. The expanding kit (optional) may be loaded in this space when the number of input is increased. Protection against tampering is assured by means of a key-locked hinged door.

The TOA W-906A and W-912A Mixer Power Amplifiers control and mix up to six independent input signals plus two inputs with use of expanding kit. The W-906A delivers up to 60 W of output power and the W-912A 120 W. Optional accessory modules are available for use with the W-906A and W-912A to provide versatility for a wide range of operating applications. Edge connectors at the bottom of the front panel permit the selection of the TOA plug-in modules. (Please contact your local TOA dealer for details on TOA plug-in modules.) The W-906A and W-912A have a built-in one-octave graphic equalizer with 9 bands to tailor sound system frequency response to room acoustics, reducing feed-back tendencies and improving intelligibility. A built-in compressor circuit is provided to protect the output level from distortion as a result of excessive input and keeps it constant. Compressor's threshold level can be adjusted. The W-906A and W-912A Mixer Power Amplifiers have output terminals to match 4 or 8 speaker systems, or speaker distribution system may be connected to the 25 or 70 V terminals. User's (blank) space is provided for additional functions to be made by the customers. The expanding kit (optional) may be loaded in this space when the number of input is increased. Protection against tampering is assured by means of a key-locked hinged door.

The ML-11T is a microphone/line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a balanced microphone/line input with removable terminal block connector, phantom power supply function, and gain and tone controls.

The B-01F is a line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced line input with female XLR type connector.

- For Balanced or Unbalanced Line Level Sources such as mixer outputs, signal processors and wireless microphone receivers.
- Transformer Isolation (10k ohms) minimizes ground loop problems when connecting remote equipment (greater than 15 feet). Source output should also be balanced.
- Connector: removable terminal block

The B-21S is a line module to be used in conjunction with the 900 series or AX-1000 amplifier. It has a balanced input and can be remotely controlled. 

The B-41S is a line module to be used in conjunction with the 900 series and AX-1000 amplifier. It has a voice-activated muting control output and a balanced input.

The E-03R is a controller module for F-121C/121CM to be used in conjunction with the 900 series modular mixers and amplifiers (MK2 and A series) .

The E-04R is a controller module for H-1 to be used in conjunction with the 900 series modular mixers and amplifiers (MK2 and A series) .

The E-05R is a controller module for H-2, H-2WP to be used in conjunction with the 900 series modular mixers and amplifiers (MK2 and A series) .

The E-06R is a controller module for H-3, H-3WP to be used in conjunction with the 900 series modular mixers and amplifiers (MK2 and A series) .

The M-01F is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced microphone input with female XLR type connector, phantom power supply function, and gain and tone controls.

The M-01M is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced microphone input with male XLR type connector, phantom power supply function, and gain and tone controls.

The M-01P is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced microphone input with φ6.3 (1/4") phone jack connector, phantom power supply function, and gain and tone controls.

- For Balanced, Low Impedance Microphones.
- High and Low Cut Fileters for tone control, 4.2k Hz and 330 Hz, 6 dB/octave.
- Phantom Power, +22V DC for condenser-type microphones. Avtive by default, cut Jumper J1 to disable.
- Connector: removable terminal block

The M-03P is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has an unbalanced microphone input with φ6.3 (1/4") phone jack connector, and gain and high and low cut filter tone controls.

- For Balanced, Low Impedance Microphones.
- High and Low Cut Fileters for tone control, 4.2k Hz and 330 Hz, 6 dB/octave.
- Phantom Power, +22V DC for condenser-type microphones. Activate by default, cut Jumper J1 to disable.
- Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
- Responds To Both Mute Bus #1 And Mute Bus #2 By Default (cut jumper(s) to disconnect individual mute bus).
- Two Mute Response Modes (cut jumpers to configure):
1. Normally-ON - turns OFF during mute activation (most common)
2. Normally-OFF - turns ON during mute activation (functions as an ON/OFF switch, useful for zone-paging microphones in multi-amplifier systems)
- Connector: removable terminal block

The M-21S is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced microphone input with screw terminals, remote volume control function, phantom power supply function, and gain and tone controls.

The M-41S is a microphone module to be used in conjunction with the 900 series or AX-1000 amplifier.The M-41S has a phantom power supply and a 600 Ω balanced input. The module also has a voice-activated muting control output. 

The M-51F is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced microphone input with female XLR type connector, phantom power supply function, voice-gate function, and gain and tone controls.

- For Balanced, Low Impedance Microphones.
- High Cut Fileters for tone control, 330 Hz, 6 dB/octave.
- Phantom Power, +22V DC for condenser-type microphones. Activate by default, cut Jumper J1 to disable.
- Voice Gate Function, module OFF until input signal exceeds threshold.
- Sensitivity Control - turn clockwise to increase sensitivity (to open gate with lower input signal) and counter-clockwise to reduce sensitivity (to open gate with higher input signal)
- Connector: removable terminal block

The M-61F is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced microphone input with female XLR type connector, phantom power supply function, compressor function and threshold and tone controls.

- For Balanced, Low Impedance Microphones.
- High and Low Cut Fileters for tone control, 4.2k Hz and 330 Hz, 6 dB/octave.
- Phantom Power, +22V DC for condenser-type microphones. Activate by default, cut Jumper J1 to disable.
- Compressor Function Helps Prevent Overload And Distortion, activates when the module's input signal exceeds a preset, adjustable threshold.
- Compression Ratio: 2:1 (fixed), reduces the module's output signal level to 1 dB for every 2 dB increase in input siganl level.
- Threshold Control - turn CW to lower threshold (to activate compressor function with lower input signal) and CCW to increase threshold (to activate compressor function with higher input signal).
- Connector: removable terminal block

The L-01F is a line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced line matching input with female XLR type connector.

- For Applications Requiring 600 ohm Line Matching.
- Transformer Isolation (600 ohms) minimizes ground loop problems when connecting remote equipment (greater than 15 feet)
- Connector: removalble terminal block

- For Applications Requiring 600 ohm Line Matching.
- Transformer Isolation (600 ohms) minimizes ground loop problems when connecting remote equipment (greater than 15 feet)
- Responds To Mute Bus Activation, via Mute SEND module or switch-closure
- Responds To Both Mute Bus #1 And Mute Bus #2 By Default (cut jumper(s) to disconnect individual mute bus) 
- Connector: removable terminal block

- For Applications Requiring 600 ohm Line Matching.
- Transformer Isolation (600 ohms) minimizes ground loop problems when connecting remote equipment (greater than 15 feet)
- Signal At Input Terminals Activates Both Mute Bus #1 and Mute Bus #2 Buses By Default (cut diode(s) to disconnect individual mute bus)
- Connector:removable terminal block

The T-12S is an AUX module to be used in conjunction with the 900 series and AX-1000 amplifier. It has a balanced line output, as well as an input that can control muting operations of a signal output.

- 1k Hz Test Tone, activate with a swich closure (short-circuit) across module screw terminals #2 and #1.
- Connector: removable terminal block

- "Buzzer" Tone, activates with a swich closure (short-circuit) across module screw terminals #2 and #1.
- "Yelp" Tone activates with a swich closure (short-circuit) across module screw terminals #3 and #1.
- Continuous Tone Activation for the duration of the switch closure.
- Connector: removable terminal block

- Eight Available Tones, selected via DIP swiches.
- Single Tone Activation with a switch closure (short-circuit) across module screw terminals #3 and #1.
- Continuous Tone Activation with a swich closure (short-circuit) across module screw terminals #2 and #1.
- Applications: doorbell, paging, door/gate release, telephone night ringer, annunciator, class change or pre-announcement tone.
- Connector: removable terminal block

The U-01F is a line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has an unbalanced line input with female XLR type connector, and gain control.

The U-01P is a line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has an unbalanced line input with φ6.3 (1/4") phone jack connector, and gain control.

The U-01R is a line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has an unbalanced line input with RCA pin jack connector, and gain control.

- For Unbalanced, Line Level Sources such as AM/FM tuners, casette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
- Use For Adjacent Sources (less than 15 feet from the hos unit)
- Connector: removable terminal block

The U-03R is an AUX module to be used in conjunction with the 900 series and AX-1000 amplifier. It has a low-cut and a high-cut filter.

The U-03S is an AUX module to be used in conjunction with the 900 series and AX-1000 amplifier. It has a low-cut and a high-cut filter.

The U-11R is a line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has an unbalanced line input with RCA pin jack connector, mute-receive function and gain control.

- For Unbalanced, Line Level Sources such as AM/FM tuners, casette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
- Use For Adjacent Sources (less than 15 feet from the hos unit)
- Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
- Responds To Both Mute Bus #1 And Mute Bus #2 By Default (cut jumper(s) to disconnect individual mute bus).
- Connector: removable terminal block

- For Unbalanced, Line Level Sources such as AM/FM tuners, casette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
- Use For Adjacent Sources (less than 15 feet from the hos unit)
- Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
- Responds To Both Mute Bus #1 And Mute Bus #2 By Default (cut jumper(s) to disconnect individual mute bus).
- Adjustable Mute Depth Provides Ducking Rather Than Full Muting.
- Connector: removable terminal block

The U-13R is an AUX module to be used in conjunction with the 900 series or AX-1000 amplifier. It has an input that can control muting operations of a signal output.

The U-14R is a plug-in type Input Priority module designed to be used in conjunction with TOA's 900 Series and BG-1000 Series amplifiers. The U-14R is equipped with 2 inputs: BGM and JUKE, and the JUKE input has priority over the BGM input. BGM signals are only output when an input is received. Output automatically switches over to JUKE signal input when JUKE signals are received. Each of BGM and JUKE inputs has both L and R inputs, which are internally mixed and output. The JUKE input is equipped with an AGC, which maintains a uniform output level for varying input signal levels. When the U-14R is used with a 900 Series amplifier, its outputs (both BGM and JUKE) can be turned off using the two MUTE BUS signal channels.

The U-21S is a line input module to be used in conjunction with the 900 series components and other TOA's equipment. It has an unbalanced input with screw terminals, remote volume control function, and gain control.

The U-43R is an AUX module to be used in conjunction with the 900 series and AX-1000 amplifier. It has a voice-activated muting control output.

The U-43S is an AUX module to be used in conjunction with the 900 series and AX-1000 amplifier. It has a voice-activated muting control output.

- For Unbalanced, Line Level Sources such as AM/FM tuners, casette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
- Use For Adjacent Sources (less than 15 feet from the hos unit)
- Compressor Function Helps Prevent Overload And Distortion, activates when the module's input signal exceeds a preset, adjustable threshold. 
- Compressor Ratio: 2:1 (fixed) reduces the module's output signal level to 1 dB for every 2 dB increase in input signal level.
- Connector: removable terminal block

The V-01S is a plug-in type VCA module designed to be used in conjunction with TOA's 900 Series and BG-1000 Series amplifiers. Its 3P terminal block is equipped with a 24 V output that supplies power to an external controller, and a control input. The gain between IN and OUT is set within the range of -100 to 0 dB referenced to the 0 - 10 V control voltage.

The TOA BX-9F is back box to mount the TOA In-Wall Amplifiers W-906 and W-912.
The BX-9F is for flush-mounting in any 4-inch wall.

The TOA BX-9S is back box to mount the TOA In-Wall Amplifiers W-906 and W-912.
The BX-9S is for surface-mounting on wall.