Description of IRX108BT: The JBL IRX108BT portable powered speaker delivers class-leading volume and clarity, total ease of use and an unrivaled feature set at our most affordable price point. Sound amazing with a custom, pro-grade PA engineered to outperform larger competing systems. Real-world EQ presets let you dial in optimal tone in an instant—no experience necessary—and built-in dbx feedback suppression lets you crank it up with confidence.Play music, soundtracks and backing tracks with Bluetooth audio streaming, and ensure your voice carries over background music with one-touch ducking. Two mic/line combo inputs and an XLR pass-thru output round out this lightweight, durable PA. Performers, content producers, fitness instructors and presenters on the go can count on the versatile, full-featured IRX108BT to serve up stunning, pro-quality sound, every time. Description of DMS100:The AKG DMS100 professional digital wireless systems for performers and presenters combine signature AKG sound quality and rock-solid, license-free 2.4GHz operation, advanced security features, extended battery life, and the ultimate ease-of-useLeveraging over 70 years of AKG microphone engineering and 24-bit/48kHz uncompressed audio coding, with none of the interference found in analog wireless systems, the DMS100 provides crisp, studio-quality sound. Combined together with ultra-low latency, the DMS100 is a joy for singers and instrumentalists. And with the unrivaled signal security provided by AES 256-bit encryption, presenters can feel at ease in confidential settings.Unrivaled fidelity, security, performance and support for up to four co-existing systems make the AKG DMS100 the ideal digital wireless solution for performing musicians, corporate and government presenters, houses of worship, fitness instructors, educators and anyone who seeks both studio-quality sound and freedom of movement onstage.