The Black HA400 Headphone Amplifier is a compact two in one device designed to provide dedicated headphone amplification and monitoring for small studios and listening setups. With a UK plug and universal AC input (AC100240V), this model is ready for use in the UK and compatible regions with the appropriate power connections. Key benefits Private listening and monitoring: enables you to listen to the mix through headphones while keeping the main playback setup separate. Simple, compact design: easy to place on a desk or workstation without taking up much space. UK plug with wide voltage range: ships with a UK plug and accepts AC input from 100240V, supporting use in multiple regions with the correct plug adapter. Reliable for studio and home use: designed to support straightforward headphone monitoring in recording, mixing, and playback scenarios. Key attributes Functionality: Headphone Amplifier and Headphone Monitor Amplifier in a single unit. Compatibility: Intended for use with standard audio setups requiring headphone monitoring and private listening. Size: Compact desktop form factor suitable for small studios and desks. Power: UK plug version; operates from AC input 100240V. Performance: Delivers headphone amplification suitable for monitoring tasks in or small professional environments. Use cases Home studio recording: use the HA400 to monitor vocal and instrument takes privately through headphones while tracking, leaving main speakers to play for others. Small project studio or classroom: provide headphone monitoring for students or collaborators during playback or review sessions without interrupting the main audio output. Rehearsal or small venue prep: enable quiet, headphonebased listening to cue tracks or practice material for performers or crew without generating loud sound in the space.