Detail 01
Six total inputs, four mic/line switchable
Paging mics and music players share one box. No outboard preamp needed for the mic channels.

Independent shopping perspective
Rack DSP for splitting one source into multiple zones in a bar, restaurant, or retail space. For installers, not players.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Paging mics and music players share one box. No outboard preamp needed for the mic channels.
Detail 02
Consumer gear plugged in via RCA collapses to mono. Stereo program material loses its image in those zones.
Detail 03
Screw-terminal wiring for permanent installs. High impedance keeps long balanced runs from loading down sources.
Detail 04
Cuts buzz picked up by long cable runs near fluorescent ballasts, dimmers, and wireless gear in commercial buildings.
Detail 05
Noise floor stays inaudible even with the system driven hard through a quiet room late at night.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. It routes and processes audio for multi-zone installed sound systems. There is no amp modeling, no pedal-style effects, and no instrument-level input.
The 641m handles four zones, fed from six total inputs — four switchable mic or line, plus two mono-summed RCA pairs.
Yes. Zone routing, levels, and processing are configured in software, then stored in the unit so it runs standalone afterward.
Yes, with wall-mounted zone controllers wired to the unit. Those are sold separately.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.