TOA Electronics 8-Channel Mixer Preamplifier - M-900MK2
TOA Electronics 8-Channel Mixer Preamplifier - M-900MK2 is backordered and will ship as soon as it is back in stock.
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TOA Electronics 8-Channel Mixer Preamplifier - M-900MK2
Overview
The TOA M-900MK2 is an 8-slot modular mixer preamplifier that accepts any combination of TOA plug-in input modules. With a balanced transformer-isolated output delivering up to +20 dBm and a vanishingly low 0.01% THD, it is the central control hub in TOA commercial paging and background music systems.
Description
The M-900MK2 provides a flexible, user-configurable mixing platform for small to medium commercial AV installations. Its eight module slots accept any TOA plug-in input module — including microphone, line, telephone interface, tuner, and priority input modules — enabling you to tailor the system precisely to your application without external adapters. A bridging RCA jack expands the system by linking multiple M-900MK2 units. Individual channel potentiometers, bass and treble tone controls (±10 dB), and a master output pot give complete front-panel control. Status LEDs monitor power, peak, protect, signal, and normal conditions at a glance, while dual mute buses and protection circuitry guard system integrity.
Key Features
- 8 slots for TOA plug-in input modules (mix any combination of mic, line, tuner, phone, etc.)
- Balanced transformer-isolated output: +4 dBm nominal, +20 dBm maximum
- Ultra-low 0.01% THD for clean, broadcast-quality audio
- Power bandwidth: 30 Hz – 20 kHz at +20 dBm, 0.5% THD
- Bass and treble tone controls ±10 dB
- Dynamic range: 90 dB at minimum volume; 77 dB at maximum volume
- Dual mute bus for priority paging and emergency override
- Bridge in/out RCA jack for system expansion
- Status LEDs: Power, Peak, Protect, Signal, Normal
- Self-protection with internal AC fuses
Typical Applications
- Commercial paging and BGM systems in retail, hospitality, and corporate facilities
- Multi-source mixing for distributed audio systems
- Zone control preamplifier driving TOA 70V/100V power amplifiers
- Houses of worship PA system source mixing
- Healthcare and education campus announcement systems
Technical Specifications
| Output Power | +4 dBm nominal; +20 dBm maximum |
|---|---|
| Power Bandwidth | 30 Hz – 20 kHz at +20 dBm, 0.5% THD; 250 Hz – 20 kHz at +18 dBm, 0.5% THD |
| Frequency Response | 20 Hz – 20 kHz |
| THD | 0.01% |
| Dynamic Range | 90 dB (min volume); 77 dB (max volume) |
| Input Slots | 8 × module slots; 100 mV sensitivity; 10 kΩ impedance |
| Bridge In/Out | RCA jack; 100 mV sensitivity; 3.3 kΩ impedance |
| Main Output | Balanced terminal block; 150/600 Ω |
| Aux Output | Unbalanced RCA jack; 10 kΩ |
| Output Regulation | <1.5 dB |
| Tone Control | ±10 dB bass and treble |
| Power Consumption | 18 W |
| Operating Temperature | −10 to +60°C (14 to 140°F) |
| Dimensions | 420 × 99 × 308 mm (16.5" × 3.9" × 12.1") |
| Weight | 5.3 kg (11.7 lbs) |
FAQ
What is the difference between the M-900MK2 and the M-900MK2 R Kit?
The M-900MK2 R Kit bundles the mixer preamplifier with a rack mounting kit. The base M-900MK2 is the standalone unit. Both are functionally identical.
What input modules are compatible with the M-900MK2?
All TOA M-900 series plug-in modules are compatible, including microphone, line, telephone, AM/FM tuner interface, and priority input modules. Contact Creation Networks for the full module selection.
Can multiple M-900MK2 units be linked?
Yes. The bridging RCA jack allows you to cascade multiple units for larger installations requiring more than 8 input channels.
Does the M-900MK2 ship with input modules?
No. The chassis requires at least one input module to pass audio. Input modules are specified and ordered separately to match the installation requirements.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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