The M-900MK2 from TOA Electronics is an eight-channel modular mixer/preamplifier that delivers professional-quality audio with a wide frequency response, low noise, and low distortion for accurate reproduction. The eight module slots accept any combination of TOA plug-in modules for the ultimate in customizability, giving you the input and output options you need. The balanced, transformer-isolated terminal block output connector has a selectable impedance for a wider variety of output options.
An aux output is provided for connection to an external mixer or recording device, and a bridging in/out jack is available for input expansion or output to a recording device. A dual mute bus allows multiple levels of paging priority when used with muting modules. The master volume of the M-900MK2 can be controlled via the front panel, or remotely with an external potentiometer. Each of the inputs has an individual volume control.
| Output Power | +4 dBm, +20 dBm (Max) |
| Power Bandwidth |
30Hz - 20kHz, +20 dBm 0.5% THD 250Hz - 20kHz, +18 dBm 0.5% THD |
| Frequency Response | 20Hz - 20kHz |
| Total Harmonic Distortion (THD) | 0.01% |
| Inputs |
8 x Module Slots, Each Accepts Any Input Module 1 x Bridging In/Out RCA Jack |
| Input Sensitivity |
Module Slots: 100mV Bridging In/Out: 100mV |
| Input Impedance |
Module Slots: 10 k ohms Bridging In/Out: 3.3 k ohms |
| Outputs |
Main: Balanced Terminal Block, 150/600 ohms Aux: Unbalanced RCA Jack, 10 k ohms |
| Output Regulation | Less than 1.5dB |
| Dynamic Range |
90dB @ Min. Volume 77dB @ Max. Volume |
| Tone Control | +/-10dB Bass and Treble |
| Indicators | LEDs for Power, Peak, Protect, Signal, and Normal |
| Protection | Self-Protection with Internal AC Fuses |
| Power Consumption | 18W |
| Temperature Range | 12 to 140°F (-10 to +60°C) |
| Dimensions (WxHxD) | 16.5 x 3.9 x 12.1" (420 x 99 x 308mm) |
| Weight | 11.7 lbs (5.3 kg) |