TOA M-864D Digital Stereo Mixer

£2,835.00 tax excl.

The M-864D is a 4U rack mountable Digital stereo mixer having 22 input channels including 8 monaural input channels and 7 stereo input channels, 6 output channels including 4 monaural output channels and 1 stereo recording output channel, and 4 bus channels. 

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The M-864D is equipped with digital signal processing functions such as Automatic resonance control function (ARC(*1)), Feedback suppressor function (FBS), Automatic stereo input mute function (AUTO MUTE or Ducker), and Equalizer. Advanced acoustic compensation can be automatically performed without using an acoustic measuring instrument.

Furnished with various function setting buttons and 14 analoge volume faders, the M-864D can be operated without need for use of a PC. However, it can also be operated by connecting the PC or optional Remote control panel. It can be mounted in an EIA component rack (4U size). (*1) Automatic Resonance Control function automatically creates the filter curve to improve sound clarity by measuring the acoustic characteristics inherent in architectural space.


Power Source220-240 V AC, 50/60 Hz
Power Consumption30 W
Frequency Response20 Hz – 20 kHz, ±1 dB
Sampling Frequency48 kHz
Dynamic Range100 dB or more
Distortion0.03 % or less, 1 kHz, +4 dB(*2) input/output, 20 Hz – 20 kHz BPF
Crosstalk-80 dB or less, 1 kHz
InputMonaural input, 8 channels, removable terminal block (3P)Phantom power (+24 V DC, 10 mA, ON/OFF switchable for each channel)
Gain setting (settable for each channel)
:PAD ON Gain min., +4 dB(*2) (max. +24 dB(*2)), 10 kΩ, electronically-balanced
Gain max., -14 dB(*2) (max. +6 dB(*2)), 10 kΩ, electronically-balanced
:PAD OFF Gain min., -10 dB(*2) (max. +10 dB(*2)), 7 kΩ, electronically-balanced
Gain max., -56 dB(*2) (max. -36 dB(*2)), 7 kΩ, electronically-balanced
Stereo Input (L, R), 7 channels (1-A, 1-B, 1-C, 2-A, 2-B, 2-C, front-mounted input)
RCA jack (stereo mini jack provided on the front panel): -10 dB(*2) (max. +10 dB(*2)), 10 kΩ ” Trim gain for each individual channel: – to 0 dB (except front-mounted input)
※ 1-A (L), 1-B (L), and 1-C (L) are mixed after passing through each trim gain circuit (the same applies to R channel)※ 2-A (L), 2-B (L), and 2-C (L) are mixed with front-mounted input after passing ” through each trim gain circuit (the same applies to R channel)
OutputOutput, 4 channels, +4 dB(*2) (max. +24 dB(*2)), applicable load 600 Ω or more,electronically-balanced, removable terminal block (3P)
REC OUT (L, R): -10 dB(*2) (max. +10 dB(*2)), applicable load 1 kΩ or more, RCA jack
Gain is adjustable.
AD Converter24 bits
DA Converter24 bits
Preset Memory16
Signal Processing Section
Automatic Resonance Control (ARC) FunctionAutomatic EQ curve creation by ARC, 4 channels (each output channel),settable independently on each channel,
ARC measuring start switch ×1, ON/OFF LED ×1
Feedback Suppressor FunctionFeedback suppressor filter creation, 8 channels (each monaural input channel),settable independently on each channel,
ON/OFF switch ×8, ON/OFF LED ×8
Filter8 channels (each monaural input channel), settable independently on each channel,high-pass filter: 20 Hz – 20 kHz
Tone ControllerBASS, Low-shelving filter: 20 – 500 Hz, ±15 dBMID, parametric equalizer: 20 Hz – 20 kHz, ±15 dB
Q: 0.267 – 69.249
TREABLE, high-shelving filter: 6 – 20 kHz, ±15 dB
10 channels (each monaural input channel, each stereo mixing input channel),settable independently on each channel
EqualizerParametric equalizer: 20 Hz – 20 kHz, ±15 dB, Q: 0.267 – 69.2494 channels (each output channel)
Crosspoint Gain– to 0 dB in 1 dB steps
Automatic Mute FunctionStereo input section matrix, independent control
FunctionInput PAD (-16 dB) control, low cut (cutoff frequency: 100 Hz) control,analog output attenuator (-6 dB, -12 dB, -18 dB, -24 dB, -36 dB, -42 dB) control,front panel operation lock function, stereo summing function,function setting panel (3 rotary encoders)
Front Panel Section
Input Level Indicator3-point LED, 12 channels (each monaural input channel, stereo 1L, 1R, 2L, 2R)
Output Level Indicator8-point LED, 4 channels (each output channel)
Auto Resonance Control (ARC) MeasurementARC measuring start switch ×1, ON/OFF LED ×1
Feedback Suppressor (FBS) FunctionON/OFF switch ×8, ON/OFF LED ×8
Low CutON/OFF switch ×8, ON/OFF LED ×8
Stereo SummingON/OFF switch ×2, ON/OFF LED ×2
Tone ControlBASS, MID, TREBLE/Settable on the function setting panel, 10 channels(each monaural input channel, stereo 1L, 1R, 2L, 2R)
Monaural Input, Analog SettingGain setting, PAD ON/OFF, Phantom power ON/OFFSettable on the function setting panel, 8 channels (each monaural input channel)
Stereo Input, Analog SettingTrim settingSettable on the function setting panel, 6 channels (1-A, 1-B, 1-C), (2-A, 2-B, 2-C)
REC OUT, Gain SettingGain settingSettable on the function setting panel, 2 channels (REC OUT L, REC OUT R)
Preset Memory SwitchingPreset selection switch ×4, ON/OFF LED ×4
Front Panel Operation LockOperation lock switch ×1, ON/OFF LED ×1
Operation Status IndicationOperation status LED ×3
Function Setting PanelRotary encoder ×3, 10-point position indication LED ×3, Function mode LED ×3
Analog Volume FaderInput volume fader ×10, Output volume fader ×4,2 faders linkable with supplied gang bar
Control Section
Contact Input8 channels, open voltage: 24 V DC, short-circuit current: 5 mA,removable terminal block (10P),
Contact output8 channels, no-voltage make contact, contact capacity: 24 V DC/100 mA,removable terminal block (10P),
Remote Control Panel2 channels, Maximum number of units: 8 units per channel24 V DC input ×2, termination ON/OFF switch ×1, removable terminal block (10P)
Maximum total cable length (star wiring): 800 m (total for 2 channels)
Maximum cable length (daisy chain wiring): 400 m per channel
Note: In daisy chain wiring, the number of units differs depending on the cable length.
Star wiring and daisy chain wiring cannot be used together.
Type of cable: Shielded CPEV cable (a pair of data cable and a pair of power supply cable) or shielded Cat 5 twisted pair cable for LAN (CAT5-STP)
NetworkNetwork I/F: 1 channel of 10BASE-T/100BASE-TX (auto-negotiation)RJ45 connector, connection via switching hub
Network protocol: TCP/IP
Connection cable: Shielded Cat. 5 or higher twisted pair cable for LAN (Cat. 5-STP or better)
Maximum cable length: 100 m (between M-864D and switching hub)
Operating Temperature0 ℃ to +40 ℃ (32 ゜F to 104 ゜F)
Operating Humidity90 %RH (no condensation)
FinishPanel: Aluminum, hairline, black, Case: Surface-treated steel plate
Dimensions482.6 (W) × 177.1 (H) × 157.2 (D) mm (19 × 6.97″ × 6.19″)”
Weight5.1 kg (11.24 lb)
AccessoriesPower supply cord (2 m (6.56 ft)) ×1, removable terminal plug (3P) ×12,large type removable terminal plug (10P) ×2, small type removable terminal plug (10P) ×1, fader gang bar ×4, protective cover ×1, rack mounting screw ×4,
CD-ROM (containing setup software) ×1
OptionRemote control panel: ZM-9011/9012/9013/9014AC adapter: AD-246(*3)(When using the Remote Control Panel)

Personal Computer Requirements
RequirementsCPU: Pentium 4, 2 GHz or fasterMemory: 1.5 GB or more (2 GB recommended)
Display: 1024 × 768 resolution or higher
Free Hard Disk Space: 16 MB or more, however 600 MB or more is required for the 32-bit version or 1.5 GB or more for the 64-bit version when “.NET Framework“ is not yet installed
Optical Drive:CD-ROM drive, Network Adapter:10BASE-T or faster connection
OSWindows XP Service Pack 3 or later, Windows Vista (32/64-bit) Service Pack 1 or later,Windows 7 (32/64-bit)
Required Component.NET Framework 4 Client Profile
*Windows is a registered trademark or trademark of Microsoft Corporation in the United States and/or other countries.
*Pentium is a trademark of Intel Corporation.
*Other company names and products are also trademarks of individual companies