TOA D-921F 2-Channel Mic/Line Input Module with XLR Connectors

Product Overview

The TOA D-921F is a 2-channel microphone and line-level input expansion module for the TOA D-901 and DP-K1 digital audio management systems, featuring XLR connectors for industry-standard pre-terminated cable assembly connections. The D-921F adds two balanced mic/line inputs to the D-901 audio matrix, enabling integration of microphones, line-level sources, and signal processors using standard XLR-terminated cable assemblies. It is the XLR-connector variant of the D-921E, sharing identical audio performance and system compatibility.

Product Description

The TOA D-921F input expansion module provides two balanced microphone and line-level input channels via XLR connectors for the TOA D-901 digital audio management system or DP-K1 expansion chassis. XLR connectors are the standard professional audio interface for microphone cables, balanced line interconnects, and pre-assembled audio cable assemblies in commercial AV and broadcast environments. The D-921F is specified when XLR-terminated cable assemblies are used in the system infrastructure — for example, when microphone cables from podiums, conference table interface plates, or lecterns terminate in XLR connectors that plug directly into the module. The D-921E provides the same 2-channel balanced mic/line input with terminal block connectors for structured-cabling installations where field-termination at the rack is preferred. Both variants install in the same D-901/DP-K1 card slots and are configured via the same D-901 system software for gain, level, and phantom power settings. Multiple D-921F modules can be installed in a D-901 or DP-K1 system to meet the input count requirements of any installation. For TOA D-901 system design, including expansion modules, frames, and output cards, visit creationnetworks.net.

Key Features

• 2-Channel Balanced Mic/Line Input — Two balanced microphone/line-level input channels for integration of professional audio sources into the D-901 digital audio matrix.
• XLR Connectors — Industry-standard XLR female connectors for direct connection of pre-terminated microphone cables and line-level sources.
• D-901 / DP-K1 Compatible — Plug-in card module for installation in D-901 digital audio management system or DP-K1 expansion chassis card slots.
• Balanced Input for Noise Rejection — Balanced audio inputs reject common-mode interference for clean audio over extended cable runs in commercial AV installations.
• Terminal Block Variant Available — D-921E provides the same 2-channel input with terminal block connectors for structured-cabling installations.

Typical Applications

• Conference room
• Boardroom
• Multi-purpose room
• Auditorium
• Government space
• Commercial meeting space

Technical Specifications

Frequently Asked Questions

What is the difference between the D-921F and D-921E?
The D-921F uses XLR connectors; the D-921E uses terminal block (screw-terminal) connectors. Audio performance and system compatibility are identical. Choose D-921F for XLR pre-terminated cable assemblies, D-921E for structured cabling field-termination at the rack.

Which systems does the D-921F work with?
The D-921F is compatible with the TOA D-901 digital audio management system and the DP-K1 expansion chassis, installing in available card slots.

Can multiple D-921F modules be installed in a single D-901 system?
Yes — multiple input modules can be installed in available card slots to meet the input count requirements of the installation. Mix D-921F (XLR) and D-921E (terminal block) modules as needed for the cable infrastructure.

Does the D-921F work with condenser microphones requiring phantom power?
Phantom power availability is configured via D-901 system software for compatible modules. Consult the D-901 documentation or your TOA dealer for phantom power specification on the D-921F.