RockBoard HA 3 In-Ear Monitoring Headphone Amplifier

The RockBoard® HA 3 is a professional in-ear monitor amplifier built for performers who need reliable, high-fidelity audio from a fixed stage position. This lightweight unit delivers crystal-clear stereo or dual-channel monitoring with impressive volume and sound quality, perfect for live performances or studio work. Flexible mounting options—belt clip or microphone stand adapter—let you position it exactly where you need it. Battery-powered with a color-changing status LED to track remaining charge, the HA 3 makes battery swaps quick and effortless. Experience the confidence of professional-grade personal monitoring wherever you perform.

Features

• cable-based two-channel in-ear monitor amplifier solution for vocalists, keyboarders, drummers, guitarists, bassists, and other musicians
• ultra-compact, lightweight design, aluminum housing
• convenient belt pack format for easy access and reliable connection to source
• sturdy metal belt clip
• 5/8″ and 3/8″ mounting adapters for alternative installation on a microphone stand
• two separate input jacks for separate monitor signals or stereo signals
• XLR/TRS-combo input jacks feature a locking mechanism that prevents accidental disconnection of the XLR cable
• 3.5 mm (1/8″) stereo output jack for connecting your favorite in-ear-monitor, earphones, or headphones
• stereo input and stereo output possible
• MONO/STEREO switch to be able to send a mono input signal to both ears
• volume and Balance controls
• powered by regular 9 VDC, center-negative pedal power supply (not included) or 9 V battery (not included)
• easy-access battery compartment
• ON/OFF switch to save battery life when not in use
• LED power indicator
• input impedance: 16KΩ
• output impedance 12Ω (when the VOLUME turns to MAX）
• dimensions (L x W x H) incl. clip, jacks & knobs: 102 x 85 x 34 mm (4″ x 3.4″ x 1.3″)
• weight: 295 g (10.5 oz) (without battery)