Rockboard HA-1

The RockBoard HA-1 is a compact headphone amplifier designed for musicians who need a private monitoring option during rehearsals and performances. This portable device connects directly between the instrument, mixer or amplifier, and headphones, allowing you to hear your audio signal clearly without disturbing others. With dimensions of 141 x 30 x 36 mm and a weight of just 111 grams including batteries, the aluminum housing features a sturdy belt clip for convenient attachment to clothing or gear. The HA-1 accepts input signals via a combo jack that accommodates both 6.35 mm stereo and XLR cables, while the output is through a standard 3.5 mm stereo headphone jack. Operation is straightforward with a volume/power knob and an easily accessible stereo/mono source switch that adapts to your input signal requirements. It is powered by two AAA batteries (not included), providing up to 12 hours of continuous operation, with battery replacement made easy through an externally accessible compartment with a clip closure. A status LED indicates battery level through color changes, while the amplifier delivers a maximum output power of 2 x 110 mW at 16 ohm impedance for clear, detailed audio playback. Suitable for singers, keyboardists, drummers, guitarists, bassists, and other musicians, this headphone amplifier enhances monitoring flexibility in rehearsal rooms, small venues, and home studios. The robust aluminum construction ensures durability for regular transport and use, providing reliable performance across various musical applications.