The Whirlwind THS 1 models of sports announcer boxes have single button mic controls. The THS 1M is Push to Mute. The headphone amplifiers are designed to deliver powerful, undistorted audio that can be heard over an arena full of screaming fans.

Headphone inputs consist of balanced left and right inputs on separate female XLR connectors. A single front panel volume control adjusts the level of both the left and right earpieces. Another balanced mono Aux input is provided which feeds left and right ears equally. The Aux input has it’s own volume control. Headphones with impedances ranging from 30 to 600 Ohms can be driven to full volume.

Power is supplied by a 12 VAC power adapter, model # PS12AC1A, included with the unit.

• Left and right balanced line level inputs with single volume control
• Additional mono Aux input feeds both left and right ears
• Balanced XLR input and output jacks
• Microphone Control switches (PTT and PTM) are completely silent
• 1/4" TRS or 3.5mm headphone jacks
• PS12AC1A power adapter included