Model DetailsThe M-900MK2 Mixer/Pre-amplifier is engineered for high performance with wide frequency response, very low noise and istortion, and excellent output regulation. Eight module slots allows you to easily configure custom configurations using TOA plug-in modules with an extensive array of features and connector types. With the rear-panel Bridge In/Out jack, you can increase the input capacity by connecting a second mixer or mixer/amplifier. Outputs include a balanced, transformer-isolated, line-level output for connection to an external amplifier and an unbalanced auxiliary output.
- Individual Channel and Master Volume Controls.
- Bass/Treble Tone Controls with Tone Defeat Switch.
- Normal, Peak, Power, Protect, and Signal LEDs provide instantly recognizable status indication.
- Auxiliary Output for connecting an external mixer or recording device.
- Bridging Input/Output Jack for fast and easy system expansion.
Type8-channel mixer preamplifier
Output Power +4dBm, +20dBm (max.)
Power Bandwidth 30-20,000Hz, +20dBm 0.5% THD
250-20,000Hz, + 18dBm 0.5% THD
Frequency Response 20-20,000Hz, 1dB
Total Harmonic Distortion 0.01% at 1kHz, rated output
Inputs Eight input ports: Every port accepts any input
One bridging input/output
Bridging input/output: 100mV/3.3k ohms
Source Impedance 200 ohms with M-01/M-11/M-21/M-51/M-61 modules
(balanced Lo-Z microphone preamplifier)
50k ohms with M-03 module
(unbalanced Hi-Z microphone preamplifier).
R-01 module (mag. phono preamplifier)
220k ohms with U-01/U-11/U-21/U-61 modules
10k ohms with B-01/B-11 modules
600 ohms with L-01/L-11/L-41 modules (line matchingtransformer),
l-01 module (paging input)
600 ohms (load impedance) with T-01 module(line output)
Outputs Main: Balanced, 150/600 ohms
Aux: Unbalanced, 10k ohms, 0dBm
Output Regulation (1kHz) Less than 1.5dB, no load to full load
Signal-to-Noise Ratio Master volume min.: 90dB
(Band Pass: 20-20,000Hz) Master volume max.: 77dB
With Tone Controls Centered
Tone Controls Bass: ± 10dB at 100Hz; Treble: ± 10dB at 10kHz
Controls8 input gain controls 1 bass tone control
1 power ON/OFF switch 1 treble tone control
1 master gain control 1 tone defeat switch
Indicators 1 power LED, 1 protect LED, 1 signal LED,
1 normal LED, 1 peak LED
Protection Self-protection, with AC fuses (inside)
Connectors Input #1 to #8: Card-edge connector
Bridging, Aux output: RCA phono jack
Output: Screw-terminal strip
Mute, Remote master VR: Screw-terminal strip
AC power cord/plug: SJT, 3-prong type
AC outlet: 3-pin grounding type
Power Consumption 18 watts
Temperature Range12°F to 140°F (-10°C to +60°C)
Dimensions16.5”(W) x 3.9”(H) x 12.1”(D) (420 x 99.1 x 307.5mm)
(without input modules)
Standard Accessories4 volume control covers (YA-920), 7 input port covers
Other FeaturesOutput disconnected for approx. 5 seconds after switching power on.
Optional AccessoriesPlug-in modules (see specifications for individual modules),
Rack mounting bracket model MB-25B
Specifications are subject to change without notice.
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