The Wohler PRESTO 16x1 SDI Video/Audio Switcher is a compact, versatile routing solution designed to select a single video source from up to sixteen inputs and output it to a single destination, such as a monitor, recorder, or broadcast chain. Engineered for professional video production, broadcast, and post-production environments, this switcher handles standard Serial Digital Interface (SDI) signals, including SD-SDI, HD-SDI, and 3G-SDI, ensuring compatibility with a wide range of equipment from legacy standard-definition gear to modern high-definition and high-frame-rate sources. Its primary utility lies in monitoring and source selection applications where multiple camera feeds, graphics outputs, or server channels need to be reviewed or selectively passed through on a single display or recording path. The unit provides a straightforward, hardware-based method for source switching without the complexity and cost of a full-scale routing matrix.

A key feature of the PRESTO series is its integrated audio monitoring capability alongside video switching. The unit not only switches the embedded audio channels within the SDI stream but often provides independent control over the audio level being fed to its monitoring outputs, which may include a built-in speaker, a headphone jack, and dedicated analog audio outputs. This allows an operator, such as a video engineer or editor, to visually confirm the video source while simultaneously auditioning the associated audio, making it an invaluable tool for quality control, confidence monitoring, and edit suite source selection. The switching action is typically instantaneous and glitch-free, maintaining signal integrity through advanced reclocking and equalization on both the selected input and the output to ensure a stable, broadcast-quality signal is delivered.

Housed in a slim, half-rack or compact desktop enclosure, the Wohler PRESTO is designed for operational simplicity and reliability. Control is provided through a front panel interface featuring tactile buttons, a selection knob, or both, often accompanied by a clear alphanumeric display that shows the selected input and signal status. Some models offer remote control capabilities via RS-232 or Ethernet for integration into automated systems. Despite its small footprint, the device is built with the robust engineering typical of broadcast equipment, ensuring stable 24/7 operation. The Wohler PRESTO 16x1 Switcher effectively consolidates the functions of a video switcher and an audio monitor into a single, efficient unit, providing a cost-effective and space-saving solution for critical signal management and monitoring tasks in dynamic production workflows.