We're an authorized Sennheiser dealer! Here's a brand new Sennheiser XS IEM Wireless Set, freq band A. Includes full factory warranty.

From Sennheiser:

"The XS Wireless IEM set includes everything you need for an easy start with personal monitoring. Defining new standards for simple, flexible, and reliable wireless in-ear monitoring, this system is designed to help you level up your sound, regardless of your tech experience. Whether a rehearsal or live performance, on a club stage or for a worship service: Benefit from renowned Sennheiser sound and solid pro-grade wireless UHF reliability packed in a convenient and rugged system – letting you focus on playing your best.

Out of the box, the XS Wireless IEM set has all the components you need to set up your personal monitoring in minutes. XS Wireless IEM is the entry to Sennheiser’s renowned in-ear monitoring sound. It delivers the whole potential of in-ear monitoring with an elegant, easy-to-use interface. No tech expertise is needed to get all the benefits: You hear yourself perfectly in any environment and can aim for new levels of perfection. The system includes a rugged transmitter, a lightweight bodypack receiver, IE 4 in-ear starter headphones, batteries, a power supply with multi-voltage adapter, and a rack mount kit for the transmitter. Eight pre-configured frequency banks in the professional UHF range (with 12 perfectly aligned channels each) keep your connection reliable and clear in every situation. Standard and advanced features make XS Wireless IEM flexible in both small and large applications. The series scales with your demands during rehearsals or live shows, on a club stage or for a worship service. Multiple audio modes match varying performances and mixing demands. You can easily change to mono, stereo, or a two-channel focus mode. The stereo receiver bodypack, although lightweight, is designed with live stages in mind. Setting options are well secured behind a stage-proof panel. A status LED keeps you informed about battery and connection status, while the LC display offers access to further settings. You can fine-tune your preferred focus mode for in-ear monitoring, balance your mix, switch the EQ to enhance the higher frequencies, or select your channel or a manual frequency. The stereo transmitter comes with a rugged metal housing. Fine-tuning the most important options has never been easier. Whether you want to increase gain, check the frequency setup, or sync some more receivers for your band setup: It all needs fewer clicks than the count-in of your drummer. A rack mount kit and a removable antenna allow for flexible setups and configurations. The set also includes a pair of IE 4 in-ear headphones. They reproduce outstanding sound quality and high dynamics, and are equipped with exchangeable ear sleeves to give a secure and comfortable fit. You get a good isolation from environmental noise as well as a very good bass response."