The dbx ZonePRO 641m is a professional 6-input, 4-output digital zone processor designed for commercial audio systems. It delivers flexible signal routing, advanced DSP processing, and multiple control interfaces, making it ideal for restaurants, retail spaces, conference rooms, houses of worship, and other multi-zone audio applications.

Featuring four balanced mic/line inputs and two mono-summed RCA inputs, the 641m ensures reliable connections for microphones, line sources, and consumer audio devices. Each channel provides hardware-controlled microphone gain, while its pre-configured DSP architecture includes input processing, a central routing matrix, and output processing for professional-grade sound.

The 641m supports two configurable input insert positions and one output insert position, allowing channel-specific signal processing. Each output zone includes AutoWarmth®, a psychoacoustic function that maintains full-frequency response even at low volumes. A link bus enables duplication of the first six audio channels to another ZonePRO unit, allowing scalable multi-zone setups.

For system control, the 641m offers optional ZC wall controllers for user-friendly in-room functions like volume, source selection, and presets. It also supports Ethernet and RS-232 control for integration with third-party systems. Setup and configuration are simplified with ZonePRO Designer software, featuring a wizard-driven interface for step-by-step programming and monitoring.

With the dbx ZonePRO 641m, commercial audio systems gain maximum flexibility, professional DSP processing, and reliable control, ensuring optimal sound in any multi-zone environment.

 

dbx ZonePro 641m Key Features

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  • 6 Inputs / 4 Outputs – Flexible multi-zone configuration

  • 4 Balanced Mic/Line Inputs – Reliable microphone and line-level connections

  • 2 Unbalanced, Mono-Summed RCA Inputs – Consumer device compatibility

  • Microphone Gain per Channel – Precise audio level adjustment

  • Pre-Configured DSP Architecture – Input processing, central matrix, and output processing

  • Two Configurable Input Insert Positions – Channel-specific EQ or dynamics processing

  • One Configurable Output Insert Position – Output-specific processing

  • AutoWarmth® Per Output Zone – Maintains full-frequency response at any volume

  • Link Bus – Duplicate channels to additional ZonePRO units for expansion

  • Optional ZC Wall Controllers – Volume, source, and preset control

  • Ethernet & RS-232 Control – Third-party control system integration

  • Wizard-Driven ZonePRO Designer Software – Simplifies setup, configuration, and monitoring

dbx ZonePro 641m Specifications

Indicators Network Traffic, Power
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
List price: $825.00
Price: $825.00