TOA B-01ST – Balanced Transformer Line Input Module, 900 Series

Product Overview

The TOA B-01ST is a transformer-balanced line input module for the TOA 900 Series modular mixer-amplifier platform, adding a high-quality balanced line input channel to any compatible 900 Series or matrix mixer chassis. Its bridging transformer design provides a high-impedance input path with excellent common-mode rejection, making it well-suited for environments where interference from HVAC, lighting dimmer systems, or long cable runs is a concern. AV integrators and system designers who standardize on the TOA 900 Series for distributed audio in commercial, institutional, and government spaces depend on plug-in modules like the B-01ST to customize the amplifier's input configuration without additional external hardware. The removable screw-terminal block simplifies field wiring and streamlines installer workflow during system commissioning.

Product Description

The B-01ST plugs directly into an available module slot in a compatible TOA 900 Series mixer-amplifier or matrix mixer, immediately adding a single transformer-balanced line input channel to the system. The transformer-isolation stage effectively breaks ground loops and rejects common-mode noise that can degrade audio quality in distributed audio systems routed across large commercial buildings. The removable terminal block allows installers to pre-wire connections off-unit and then seat the module in place, a time-saving advantage in system integration workflows. For TOA 900 Series deployments in training rooms, multi-purpose rooms, all-hands spaces, and commercial meeting environments, the B-01ST provides the balanced line input needed to accept signals from a digital signal processor, media player, or other line-level source. Systems integrators working with TOA's 900 Series platform should specify the B-01ST when the system input plan calls for transformer-isolated balanced line inputs, as the bridging architecture maintains proper impedance matching across the signal chain.

Key Features

• Transformer-Balanced Line Input — Bridging transformer design provides high-impedance input with strong common-mode rejection for clean audio in noisy commercial environments.
• 900 Series Plug-In Compatibility — Installs directly into any available module slot on compatible TOA 900 Series mixer-amplifiers and matrix mixers without additional hardware.
• Removable Screw-Terminal Block — Detachable connector block allows pre-wiring before module installation, improving installation efficiency and simplifying field service.
• Ground Loop Rejection — Transformer isolation breaks ground loop paths common in large commercial AV systems, preventing hum and interference from affecting distributed audio quality.
• Balanced Signal Path — Accepts balanced line-level signals from DSP units, source equipment, or other professional AV gear for integration into TOA 900 Series distributed audio systems.