February 2025 System - Minimalistic Horn Hi-Fi

Two boxes and nothing else - a pair of horn loudspeakers and a single integrated amplifier make up this entire build, and Hifiverse titled it "Minimalistic Horn Hi-Fi" for exactly that reason. The Shinjitsu Audio Hiro, a compact horn design, and the Arcam A5 integrated amplifier prove a real horn-based system doesn't need a rack full of separates to sound complete.

The system at a glance

Two components, a highly sensitive horn loudspeaker rated at 93dB paired with a modest 2x50-watt integrated amplifier, and a laconic system that needs nothing else added to function as a complete, capable hi-fi setup. This is a system for a buyer who wants proof that horn-loudspeaker engineering doesn't require an exotic amplifier chain or an outboard DAC to sound clear, transparent and dynamic.

Why these components work together

The Hiro is rated at 93dB sensitivity with an impressive frequency response of 20Hz to 20kHz for its compact size, an efficiency figure that matters enormously here because the Arcam A5 delivers only 2x50 watts per channel, a power output that would leave many conventional bookshelf or floorstanding speakers sounding thin and underpowered but which comfortably drives a horn design this efficient with real headroom to spare. That pairing of high sensitivity and modest amplifier power is the entire engineering logic behind the system's minimalist structure - because the Hiro needs so little power to reach real listening volumes, the A5 never has to work near its limits, avoiding the compression and strain a less efficient speaker would introduce at the same wattage. The Arcam A5's built-in Hi-Res ESS ES9018 DAC is the second half of what makes this a complete two-box system - rather than needing a separate outboard digital-to-analogue converter to handle streamed or digital sources, the amplifier's own onboard conversion is capable enough that Hifiverse specifically notes no additional components are needed to use the system as-is.

How it sounds

Hifiverse's own verdict, "clear, transparent and dynamic," is precisely what a well-matched high-sensitivity horn speaker and a modestly powered but capable integrated amplifier should deliver together - because the amplifier isn't straining to reach volume, distortion stays low, and the horn loading itself contributes the kind of immediacy and dynamic ease that makes even a minimal two-box system sound considerably more substantial than its component count suggests.