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The HM901s High-Resolution Portable Music Player from HIFIMAN utilizes a pair of the ES9018 DAC high-performance chips from ESS Technology. Two chips per individual channel provide warm sound and remarkable midrange reproduction. The player supports Direct Stream Digital (DSD) 2.8 MHz files for high-quality playback and decodes 24-bit 192 kHz high definition music files, while also upsampling to 24/192. It features a balanced amplifier card that uses four OPA627 Op-amps and four OPA634 buffers. The amp card works in balanced mode for earphones/headphones with a 3.5mm standard jack.
Supports Direct Stream Digital (DSD) 2.8 MHz files for high-quality playback
Decodes 24-bit 192 kHz high definition music files and offers upsampling to 24/192
Utilizes a pair of the ES9018 DAC high-performance chips from ESS Technology, which incorporates two chips per individual channel to provide warm sound and remarkable midrange reproduction
ES9018 chips achieve wide sound stage and high detail separation
Switchable high and low gain modes for corresponding headphone and earphone leads
Replaceable amplifier card design
Utilizes dual voltage design delivering +/- 7.4V, 2000mA to help eliminate power supply noise and focus on music
Wide frequency response without coupling capacitors provide proper live concert recording
The step analog volume control is designed for precise control and accurate channel balance
The resistors in both channels of the step potentiometer are paired to make sure they are functionally identical
No-gain control circuit delivers high performance by the digital volume chip
Advanced potentiometer has a smart attenuation design, particularly at low volumes to drive high-sensitivity earphones and avoid inconsistent volume levels and channel imbalances when increasing or decreasing the volume
Balanced amplifier card uses four OPA627 Op-amps and four OPA634 buffers
Amp card works in balanced mode for earphones/headphones with a 3.5mm standard jack
Taichi II interface offers a simplified, elegant, and high performance experience
In the Box
HIFIMAN HM901s High-Resolution Portable Music Player with Balanced Amp Card