Amplifiers · Original
Aperture Audio HPA-1 Headphone Amplifier
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Featured review · Amplifiers
Aperture Audio HPA-1 Headphone Amplifier
A fictional reference-class headphone amplifier that combines quiet operation, useful power, and thoughtful controls without pretending price settles the argument.
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Active speakers · Original
Arcfield Monitor One Active Speakers
A thoughtful small-room system with credible setup tools.
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Latest news
Press release summary · Firmware and software
Aperture outlines quieter relay control for its next amplifier update
The update focuses on relay behaviour, start-up volume, and clearer front-panel status.
External source summary · Measurements
Working group proposes an open format for loudspeaker measurement sets
The draft format would package curves with fixture, distance, calibration, and smoothing metadata.
Press release summary · Headphones
Fieldwork previews serviceable Open 8 headphones
The Open 8 launch makes repairability a headline specification rather than a footnote.
Commentary · Streaming
Streaming services still treat mastering metadata as optional
Catalogue size is easy to market; dependable mastering provenance remains rare.
External source summary · Firmware and software
Eastbank adds phase visualisation to fictional subwoofer control app
The app now shows crossover phase and can export a record of applied settings.
External source summary · Industry
Survey finds repair documentation lags behind premium audio pricing
Long warranties do not always coincide with public parts pricing or repair documentation.
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Technical articles
Amplifier signal-path diagramPrototype image
Technical guide
How to Evaluate a Headphone Amplifier Beyond Its Maximum Power Rating
Maximum power is one boundary condition. Gain structure, noise, output impedance, and usable control range often matter more.
Frequency-response graphPrototype image
Measurement guide
How to Read Headphone Frequency-Response Measurements
A graph becomes useful only when the fixture, target, smoothing, and positional variation travel with it.
Power versus distortion graphPrototype image
Technical explainer
Why Amplifier Power Specifications Are Frequently Misleading
A power figure without load, bandwidth, channel count, and distortion threshold is closer to marketing than evidence.
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