Pass Labs HPA-1 Headphone Amplifier Review
April 29, 2018 Comments Off on Pass Labs HPA-1 Headphone Amplifier Review
“Matt enthusiastically preferred the Pass to the Mjolnir. Matt and David sometimes differed in their reactions, a matter of taste, but keep in mind the Mjolnir was designed to emulate a classic triode circuit, which saturates a bit as things get loud. Single tone tests on the Mjolnir show predominance of 2nd and 3rd harmonic. However, harmonic distortion is a funny beast, sometimes it can manifest itself as presence, sometimes as warmth, and often as fat bass, very dependent on the material, so I’m not surprised at the sometimes apparently contradictory reactions depending on the musical source. Distortion is compression, it can subjectively soften dynamics, but when it’s enhancing a range, that range can seem louder and counter intuitively dynamics can appear to increase.”

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