The APB 008 SB-EX : 1 BALANCED IN : 8 OUT is a professional, passive, portable audio splitter, also known as a "press box" or "mult box" expander. It is designed to be used in conjunction with an active AudioPressBox drive unit to distribute a single audio signal to multiple media outlets at events like press conferences, presentations, and other live events.

Key Features

• Passive Expander: The APB-008 SB-EX does not require a separate power supply. It receives its signal and power from a compatible AudioPressBox drive unit (such as the APB-D100, APB-D200 R, APB-208 R, or APB-400 R).
• Audio Distribution: Its primary function is to split a balanced audio signal from the drive unit and provide it to multiple outputs.
• 8 Balanced Outputs: It features eight high-quality balanced XLR outputs.
• Transformer-Isolated Outputs: Each of the eight outputs is individually transformer-isolated. This is a crucial feature that prevents ground loops and electrical interference between the connected devices, ensuring clean audio for every journalist, broadcaster, or recording device.
• Switchable Output Levels: Each output can be switched between LINE level (+6 dBu) and MIC level (−20 dBu). This flexibility allows the user to connect a wide range of devices, from professional recording equipment to consumer cameras and recorders, without the need for additional level-matching devices.
• Daisy-Chain Capability: The unit has a balanced input (XLR) and a link output (XLR) which allows you to daisy-chain up to three APB-008 SB-EX units in a row from a single output on a drive unit. This allows for a total of up to 24 outputs per drive unit output. The total cable length for a daisy-chained setup can be up to 300m, or even up to 500m in some setups.
• Durable and Portable Design: The "SB" in its name stands for "stage box," indicating its rugged, steel-box construction that is built for professional, on-the-go use.