BSS BSSAR133 - Active Direct Injection

The BSS AR‑133 is a professional active direct injection (DI) box / line balancer designed to convert unbalanced high‑impedance instrument or line‑level signals into balanced low‑impedance outputs suitable for mixing consoles and long cable runs. It is built with a rugged aluminum case and offers versatile power options, making it reliable for live sound, studio recording, and general audio applications. The unit supports both phantom power and internal 9 V battery operation with automatic switchover, ensuring uninterrupted performance even if console phantom power is lost.

Key Features

Signal & Connectivity

• Converts unbalanced instrument/line signals to balanced outputs

• Input options include 1× ¼″ TS jack and 3‑pin XLR (both in parallel)

• Balanced output via XLR connector

• Parallel link ¼″ jack output for feeding amplifiers or other gear

Powering

• Operates on 48 V phantom power or internal 9 V battery with automatic switchover

• LED power indicator for phantom status

Performance

• Switchable input attenuation (0 dB, ‑20 dB, ‑40 dB) for instrument, line, or amp levels

• High input impedance for minimal loading

• Transformer‑balanced output for noise reduction