TOA U-61S T – Unbalanced Line Input Module, 900 Series

Product Overview

The TOA U-61S T is an unbalanced line input module for the TOA 900 Series modular amplifier platform, designed to accept unbalanced consumer or semi-professional line-level signals from sources such as media players, streaming devices, or other unbalanced-output equipment. While the 900 Series platform includes transformer-balanced modules for professional AV integration, many commercial installations also incorporate consumer source devices—background music players, voice alert systems, or signal generators—whose outputs are unbalanced and require a compatible input module for system integration. The U-61S T provides that interface in a compact plug-in module that installs directly in the 900 Series chassis alongside balanced input modules. Commercial AV integrators completing TOA 900 Series installations with mixed balanced and unbalanced signal sources will specify the U-61S T for the unbalanced source connections.

Product Description

The U-61S T plugs into any available module slot in a compatible TOA 900 Series mixer-amplifier or matrix mixer chassis, adding an unbalanced line input suitable for RCA or unbalanced terminal connection from consumer or semi-professional audio sources. The module follows TOA's standard plug-in format with a removable screw-terminal block for field wiring, making it straightforward to wire the input from a nearby equipment rack or furniture-mounted source device. In commercial AV installations where background music players, on-hold telephone audio, or digital signage audio feeds are integrated into a TOA 900 Series distributed audio system, the U-61S T provides the correct input interface for these typically unbalanced sources. Combining U-61S T modules with balanced input modules (B-01ST, L-01ST) within the same 900 Series chassis allows a single amplifier to handle a complete mix of professional and consumer signal sources without external level converters. The compact form factor and standard plug-in installation process follow the same workflow as all TOA 900 Series input modules.

Key Features

• Unbalanced Line Input — Accepts unbalanced line-level signals from consumer media players, streaming devices, and other semi-professional sources for integration into TOA 900 Series distributed audio systems.
• 900 Series Plug-In Compatible — Installs in any available module slot in TOA 900 Series mixer-amplifiers and matrix mixers using the standard TOA module format.
• Removable Screw-Terminal Block — Detachable connector block supports pre-wiring of the input connection before module installation, consistent with TOA's standard installation practice.
• Mixes With Balanced Input Modules — Operates alongside B-01ST, L-01ST, and other balanced modules in the same 900 Series chassis for mixed balanced/unbalanced source configurations.
• Consumer Source Integration — Provides the correct input path for unbalanced consumer and semi-professional AV sources without requiring external impedance converters or line-level adapters.