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Portable Music Player Hifiman (901S) - $875 (Pullman)
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HM901s brings balanced, high quality music reproduction creating joy for your ears. Two top-of-the-line DAC chips. ES9018 is currently the most expensive DAC chip available. It took HIFIMAN’s design team an entire year to refine this highly regarded DAC chip by adding an extra oscillator to further upgrade its performance. The final result raises the bar and creates an all new reference. Newly improved design replaces balance/normal switch with a pair of earphone jack holes, making it easier to use. Contributing to the ease of use is the new TAICHI II UI. Derived from the original HM901 volume control, TAICHI II UI is designed to achieve the most intuitive user interface possible. Ergonomic, manually adjustable thumbwheel design allows easy and precise control. Unlike the single battery design dominant at other portable music players, the HM901s’ exceptional performance comes from the duo-battery solution,
delivering +/- 7.4 volts, 2,000mA. Highly effective at reducing power-supply noise allowing you to enjoy more of the music.
Parameters
DAC chip: ES9018*2
Op-amp: OPA627*2， OPA2107*2
Frequency response: 20HZ-20KHz
THD: 0.008% (Line out)
S/N: 106±4DB
SD card memory: up to 256GB
Battery: Li-ion +7.4V 1600 mAh, -7.4V 500mAh
Battery life: 9 hours
Supported music formats: MP3, AAC, WMA, OGG, APE, WAV FLAC, AIFF, ALAC (M4A), DSD
Please check links below for more details:
https://hifiman.com/products/detail/235
https://hifiman.com/hm901s/index.html