TOA D-921E 2-Channel Mic/Line Input Module with Terminal Block

Product Overview

The TOA D-921E is a 2-channel microphone and line-level input expansion module designed for installation in the TOA D-901 and DP-K1 digital audio management systems. Using terminal block (screw-terminal) connectors for both microphone and line-level inputs, the D-921E provides a field-termination input interface that accommodates permanent structured-cabling installations where field-installed connectors are specified. Each channel provides individual gain and level control for balanced integration of microphone and line-level audio sources into the D-901/DP-K1 digital audio processing matrix.

Product Description

The TOA D-921E input expansion module installs in available card slots in the D-901 digital audio management system or the DP-K1 expansion chassis, adding two balanced microphone/line-level audio input channels with terminal block field wiring. Terminal block (euro-style screw terminal) connectors are specified for commercial AV installations where structured cabling is terminated in-wall or in a rack punchdown field rather than with pre-assembled XLR connectors. The D-921E is the terminal block variant; the D-921F provides the same two-channel input capability with XLR connectors for installations requiring pre-terminated cable assemblies. Both modules share the same audio performance characteristics and D-901/DP-K1 integration. The D-901 system supports multiple simultaneous input modules, enabling system designers to configure the number of microphone and line-level inputs appropriate for each installation — from small conference rooms to large-scale multi-zone PA systems. Phantom power and gain settings are configurable per channel via the D-901 system software. For the complete TOA D-901 digital audio management system and compatible expansion modules, visit creationnetworks.net.

Key Features

• 2-Channel Mic/Line Input — Adds two balanced microphone/line-level inputs to the TOA D-901 or DP-K1 digital audio management system.
• Terminal Block Connectors — Euro-style screw-terminal connectors for structured cabling field-termination in commercial AV rack installations.
• Balanced Input — Balanced audio inputs reject common-mode noise for clean audio over long cable runs in commercial AV installations.
• D-901 / DP-K1 Compatible — Installs in available card slots in the TOA D-901 digital audio management system or DP-K1 expansion chassis.
• Per-Channel Gain Control — Individual gain and level adjustment per channel for integration of varied microphone and line-level sources.

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-921E and D-921F?
The D-921E uses terminal block (screw-terminal) connectors while the D-921F uses XLR connectors. Both modules are 2-channel balanced mic/line inputs with identical audio performance and compatibility with the D-901/DP-K1 system. Terminal blocks are preferred for structured cabling; XLR for pre-terminated cable assemblies.

Which TOA systems accept the D-921E?
The D-921E installs in card slots in the TOA D-901 digital audio management system and the DP-K1 expansion chassis.

How many D-921E modules can be installed in a D-901 system?
The number of input modules is limited by the available card slots in the D-901 or DP-K1 chassis. Consult the D-901 system documentation or contact your TOA dealer for slot configuration specifics.

Does the D-921E support phantom power for condenser microphones?
Phantom power availability and configuration is managed via the D-901 system software for compatible modules. Refer to D-901 system documentation for phantom power settings on the D-921E.