Headphones on Informed Listeninghttps://www.informedlistening.com/categories/headphones/Recent content in Headphones on Informed ListeningHugoen-IEInformed ListeningMon, 20 Jul 2026 00:00:00 +0000Aperture Audio HPA-1 Headphone Amplifierhttps://www.informedlistening.com/reviews/aperture-audio-hpa-1/Sat, 18 Jul 2026 00:00:00 +0000https://www.informedlistening.com/reviews/aperture-audio-hpa-1/A composed, technically capable desktop amplifier with excellent ergonomics and a few deliberately conservative choices.How to Read Headphone Frequency-Response Measurementshttps://www.informedlistening.com/articles/read-headphone-frequency-response/Wed, 08 Jul 2026 00:00:00 +0000https://www.informedlistening.com/articles/read-headphone-frequency-response/A graph becomes useful only when the fixture, target, smoothing, and positional variation travel with it.Caldera Reference 2 Headphoneshttps://www.informedlistening.com/reviews/caldera-reference-2/Sun, 14 Jun 2026 00:00:00 +0000https://www.informedlistening.com/reviews/caldera-reference-2/Expressive, carefully tuned headphones whose weight and clamp will divide listeners.Output Impedance Without the Folklorehttps://www.informedlistening.com/articles/output-impedance-explained/Fri, 29 May 2026 00:00:00 +0000https://www.informedlistening.com/articles/output-impedance-explained/Output impedance is a system interaction. Its importance depends on the headphone’s own impedance curve.