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About this gear
The HP-A4 represents Fostex's refined mid-tier desktop amplifier, offering improved power delivery and DAC performance over its predecessor for serious headphone enthusiasts. Its 2014 release positioned it as a capable companion for high-impedance and planar-magnetic headphones, appealing to detail-focused listeners willing to invest modestly in their desktop chain.
About Fostex
Japanese professional audio company, a division of Foster Electric, manufacturing transducers since 1949. Fostex produces acclaimed planar magnetic headphones (T50RP series — the most modded headphone in history) alongside studio monitors and professional audio equipment. The TH900 with its urushi-l...
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