Rockboard HA 3 In-Ear Amplifier

The RockBoard HA 3 In-Ear Amplifier is a wired in-ear monitor headphone amplifier designed for musicians who need clear, powerful personal monitoring with direct control on stage. Unlike a simple volume control, the HA 3 functions as a dual-channel active amplifier, allowing you to work with a stereo signal or two independent monitor signals. This makes it especially useful for singers, keyboard players, drummers, guitarists, bassists, and other musicians who remain relatively stationary during live performances or in the studio.

It features two combo XLR/jack TRS 6.35 mm inputs with locking mechanism, a 3.5 mm stereo mini-jack output for in-ear monitors or headphones, volume control, balance adjustment, and a mono/stereo switch to tailor the listening experience according to the connected source. Its compact, pedalboard-friendly format with an aluminum casing, belt clip, and 5/8" and 3/8" threaded adapters for microphone stand mounting offers a robust and convenient solution for live, rehearsal, or studio use. It can operate on a 9 V battery or a standard 9 V DC center-negative pedal power supply, not included.

• Type: Wired in-ear monitor headphone amplifier
• System: Dual channels for stereo signal or two independent monitor signals
• Recommended for: Singers, keyboard players, drummers, guitarists, bassists, and other musicians
• Inputs: 2 combo XLR/jack TRS 6.35 mm inputs
• XLR Lock: Safety mechanism to prevent accidental disconnection
• Headphone output: 3.5 mm stereo mini-jack for in-ear monitors, intra-aural headphones, or standard headphones
• Switch: Mono/stereo selector to adapt the listening mode based on the connected source
• Controls: Independent volume and balance to adjust level and panning
• Mounting: Metal belt clip and 5/8" and 3/8" threaded adapters for microphone stand mounting
• Power: 9 V battery or standard 9 V DC center-negative pedal power supply, not included
• Indicator: Power LED with battery status
• Construction: Compact, lightweight aluminum enclosure
• Input impedance: 16 kΩ
• Output impedance: 12 Ω at maximum volume
• Dimensions: 102 x 85 x 34 mm, including clip, connectors, and controls
• Weight: 295 g without battery

About RockBoard

RockBoard is a brand specializing in practical solutions for musicians who want to assemble, organize, and transport their gear easily and professionally. While best known for their pedalboards, they also offer power supplies, cabling, patchbays, gig bags, flight cases, and accessories for live performance, studio, and rehearsal use.

Their focus is clear: to create durable, functional systems that are easy to integrate, primarily designed for guitarists, bassists, and musicians working with pedals or compact setups. A highly useful brand for keeping equipment clean, secure, and well-organized.