dbx ZonePro 640M 6x4 Digital Zone Processor


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dbx ZonePro 640M 6x4 Digital Zone Processor

The ZonePRO 640m offers fixed I/O, pre-configured architecture, configurable insert processing and optional duplication of audio channels to another ZonePRO device via a link bus.

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£ 1,055.00

£ 1,266.00 inc VAT

£ 1,266.00   tax incl.

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Product Category Feature Sound
Price Unit Each
Condition new
Availability in stock
Audio Product Type Processors
Brand DBX
Manufacturer DBX
Number of Input Channels 6 Channel
Number of Output Channels 4 Channel

dbx ZonePro 640M 6x4 Digital Zone Processor

The ZonePRO 640m offers fixed I/O, pre-configured architecture, configurable insert processing and optional duplication of audio channels to another ZonePRO device via a link bus.

The 640m features a total of six inputs and four outputs. Inputs include four balanced mic/line switchable terminal block inputs and two mono-summed pairs of unbalanced RCA inputs. Hardware-controlled microphone gain allows adjustment of microphone gain per channel.

The 640m device has a pre-configured architecture with input processing, a central matrix and output processing. Two input insert positions and one output insert position allow channel-specific insert processing to be configured. AutoWarmth, a psychoacoustic function that maintains full frequency bandwidth even when the signal level has dropped, is permanently available on each output zone.

A link bus allows duplication of the first six audio channels to another ZonePRO device in applications where additional output zones are required.

The front panel of the 640m features comprehensive signal metering, an informative LCD display and user-specified front panel control.

Additional system control is offered in the form of optional Zone Controllers. This collection of hardware wall-controllers represents a series of simple, elegant user interfaces for functions such as volume, source and preset control.

All ZonePRO devices can be controlled by third party control systems via RS-232 or Ethernet as applicable (see table for further information).

ZonePRO Designer—the configuration, control and monitoring software for the ZonePRO family of devices—offers control of the ZonePRO 640m via Ethernet or RS-232. The Configuration Wizard within ZonePRO Designer guides users through the step-by-step configuration process of the 640m.


  • 6 Inputs / 4 Outputs
  • 4 Balanced Mic/Line Inputs
  • 2 Unbalanced, Mono-Summed RCA Input Pairs
  • Microphone Gain per Channel
  • Pre-Configured Architecture
  • Two Configurable Input Insert Positions
  • One Configurable Output Insert Position
  • AutoWarmth per Output Zone
  • Link Bus
  • Comprehensive Signal Metering
  • Front Panel LCD
  • User-Specified Front Panel Control
  • Optional ZC Controllers
  • Ethernet Control
  • Serial Control
  • Third Party Control
  • Wizard-Driven Configuration


Indicators - 4 Independent Six-Segment Lightpipe Output Meters that range from -30 to +20 dBu, Threshold Meters
LCD Display - LCD Display provides information about Source Selection, Page Steering, Zone Volume and Mute
Input - 6 Total (4) Switchable Mic or Line, (2) Unbalanced, Mono-Summed RCA Input Pairs
Input Connectors - Euroblock (Line and Mic) RCA (Source)
Input Type - Electronically balanced/RF-filtered
Input Impedance - Euroblock: >50kΩ Balanced, >25kΩ Unbalanced, RF Filtered; RCA: >25kΩ Unbalanced, RF Filtered
Max Input - +20dBu Mic/Line, +12dBu RCA
CMRR - >40dB, typically >55dB 1 kHz
Mic Preamp gain - 30 to 60dB
Mic Preamp Equivalent Input Noise (EIN) - < -118dBu, 22Hz-22kHz, 150Ω Source Impedance
Mic Preamp Phantom Power - +15VDC
Output - 4 total
Output Connectors - Euroblock
Output Type - Electronically Balanced, RF Filtered
Output Impedance - 120Ω Balanced, 60Ω Unbalanced
Max Output - +20dBu
A/D Converter - dbx Type IV conversion system
A/D Dynamic Range - (line) >113 dB, A-weighted, >110 dB unweighted
Type IV Dynamic Range - >119dB, A-weighted, 22kHz; BW: >117dB, unweighted, 22kHz BW
Digital Output Dynamic Range - >114 dB A-weighted, 110dB unweighted
Sample Rate - 48kHz
D/A Dynamic Range - 112 dB A-weighted, 109dB unweighted, 22kHz BW
Dynamic Range - >109 dB A-weighted, >106 dB unweighted, 22kHz BW
THD+Noise - 0.003% typical at +4dBu, 1kHz, 0dB gain
Frequency Response - 20Hz - 20kHz, +/-0.5dB
Interchannel Crosstalk - >80dB typical
Propagation Delay - 0.6 msec
Operating Voltage - 100VAC 50/60Hz, 120VAC 60Hz and 230VAC 50/60Hz
Power Consumption - 29 W
BTU - <92.13
Unit Weight - 6.05 lbs / 2.74 kg
Shipping Weight - 8.2 lbs / 4 kg
Dimensions - 1.75” (1U) x 19” x 7.75” (45mm x 483mm x 197mm)
Safety Agency Certifications - UL 600065, IEC 60065, EN 55013, E60065

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Akwill Limited
493-295 Chester Rd.
M16 9HF

+44(0)161 872 7337