Whirlwind THS 4 Talkback Headphone Box DJ Sports Announcer Microphone Control Made in USA The THS 4 Talkback/Headphone box is an all-purpose, fully loaded sports announcer console. Both main and talkback microphone outputs are provided, with Mic On/Off, Cough and Talkback switches for control. The talkback output is line level with a trim control and the main microphone output of the THS 4 will be live on-air if power is lost, when using dynamic microphones. There are two inputs for the headphones with balanced and unbalanced connections.Each input has a volume control and assign switches for the left and/or right headphones. Input level adjustments affect both left and right ears equally. Headphones with impedances ranging from 30 to 600 Ohms can be driven to full volume. Description The THS 4 has both main and talkback microphone outputs. A latching Mic On/Off switch connects signal to the main mic output. The switch is illuminated red when the mic output is live. 36 Volt phantom power is available if condenser mics are used. Onboard phantom power allows seamless switching when talkback is activated. The switch to turn phantom power on and off is recessed to avoid accidental turn off. A momentary Cough switch silences both the mic out and the talkback out when depressed. The momentary Talkback switch connects audio to the talkback output and mutes the mic out. The announcer?s microphone is sent through a preamp and line driver that deliver signal to the talkback output at line level. There is a level control for fine adjustment of the audio sent down the talkback line. The Talkback switch illuminates green when depressed. The headphone section of the THS 4 has two inputs. Each input has a volume control and dip switches to send the signal to the left and/or right headphone earpieces. When an input is assigned to both ears, level adjustments affect both left and right ears equally. Input signals can be either balanced mono or unbalanced stereo. A rear panel switch selects the proper mode. Both 3 pin XLR and OE? TRS input jacks are provided for hookup flexibility. 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. Features · Two line level inputs with individual volume controls · Input Assign switches route inputs to either or both ears · Balanced or unbalanced inputs on XLR or OE? TRS jacks · Passive Mic Out for on-air reliability · Mic output switching is completely silent · Active line level Talkback Out with level adjust · Mic On, Cough and Talkback switches for control · OE? TRS or 3.5mm headphone jacks · PS12AC1A power adapter included Echotone Music LLC is an experienced E-commerce Audio Visual Equipment dealer since 1998. We take pride in selling Pro Audio gear for musicians, sound engineers, production companies and broadcast applications. Shipping --Pro packed shipped USPS, UPS or Freight Service. Contact us pay for 2 day air upgrade on any unit. We are working hard to get your product ( built if needed), processed shipped. Processing times vary, 2-30 days Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided. Otherwise customer pays for return shipping. Returned items must be sealed/unopened to qualify for a full refund. Refunds are for the Item cost only. Gear returned with out all its original packaging, accessories or shows signs of wear, is subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. What products can not be returned? - Clearance items, Custom Builds, items identified as non-returnable, discontinued items, used or NOS items, electronic software downloads, demo gear, computers, vacuum tubes, earbuds, harmonicas raw-frame speakers, drumheads, drumsticks, turntable cartridges, fog fluids