New HiFiMan HM901S DAP
May 28, 2015 at 2:42 PM Thread Starter Post #1 of 2
Feb 1, 2011
HiFiMan HM901s DAP - $1,499
Free 2nd Day Shipping
Free 2nd Day Shipping
HiFiMan HM901s DAP​
HiFiMan HM901S portable media player with switchable headphone and earphone modes so you can choose how you listen.

Now available in 2 versions - Balanced Amp Card and Gold Minibox Amp Card. The HM901s NO LONGER comes with the standard amp card!

Main Features:

  1. Includes DAC ES9018 for upgraded performance
  2. Replaceable amp card design
  3. Dual-battery solution for reduced noise interference
  4. Step potentiometer volume control
  5. Adaptive to both balanced and single-ended outputs
  6. Sleek new look
  7. TAICHI II for most intuitive user interface
  8. 3 second power on / off
  9. Decodes 24-bit 192kHz high definition music files
  10. Offers upsampling to 24/192
  11. Supports DSD 2.8MHZ
  12. 9 hour battery life

Supports Multiple Audio Formats

The HM901s decodes 24-bit 192kHz high definition music files and offers upsampling to 24/194.


DAC ES9018 for best sound experience

The ES9018 is currently the most expensive DAC chip available. HiFiMan's design team refined this DAC chip by adding an extra oscillator for upgraded performance. The result creates an all new reference among portable and mobile high-res players.

The ES9018 also achieves a wider sound stage with enhance separation.

Optimized Analog Circuit

The HM901s brings balanced, high quality reproduction of live music to your ears.

  1. Get excellent sound with the OPA2107
  2. Two filter response curves, vintage and HD, give you two different sound experiences
  3. Switch between high & low gain modes for headphones and earphones
  4. Replaceable card design

Dual-Voltage Doubly Divine Sound

The dual-battery solution of the HM901s provides enhanced performance delivering +/- 7.4 volts, 2,000mA. This reduces the power-supply noise and allows you to enjoy more of your music.

Advanced Step Potentiometer

The patented step analog volume control is designed for precise control and accurate channel balance. The step potentiometer removes the carbon film that tends to easily wear out. The resistors in both channels of the step potentiometer can be paired to make sure they are 100% identical. No-gain control circuit delivers performance unmatched by the digital volume chip.

Digital volume control chips with no abatement from digital high frequency noise can result in poor sound quality.

HM901s is compatible to most earphones and heapdhones in the market by simply changing the amp module.

Balanced Output for Perfected Sound Experience

The HM901s brings balanced, high quality music reproduction creating joy for your ears. Designed to be adaptive for both balanced and single-ended output, HM901s offers wider balanced output signals with even more powerful resistance to interference. The soundstage and separation are largely improved.

Replaceable Amp Card Design

HiFiMan uses an open interface for headphone amplifiers to allow for more compatible designs and a chance for third-party designers to collaborate with HiFiMan.

New Look

  1. Aluminum alloy modeled and crafted for higher precision and durability.
  2. Exceptionally durable anti-glare screen.
  3. Processed surface quality of the sapphire substrate for scratch resistance.
  4. Newly optimized design with increased shock proof intensity.


This newly improved system is the most intuitive user interface possible. Features only a 3 second power on / off ability.


DAC Chip: ES9018*2

Op-amp:OPA627*2, OPA2107*2 

Frequency response:20Hz-20kHz

THD:0.008% (Line out)

SD card memory:up to 256GB
Battery life:9 hours
Supported music formats:MP3, ACC, WMA, OGG, APE, WAV, FLAC, AIFF, ALAC (M4A), DSD
Thank You.​
Drew Baird
Moon Audio ​
140 Iowa Lane​
Suite 204​
Cary, NC 27511 

Moon Audio Stay updated on Moon Audio at their sponsor profile on Head-Fi.
Jun 19, 2015 at 2:28 PM Post #2 of 2


100+ Head-Fier
Dec 2, 2007
1000-1200$ was my limit.. now with canadians taxes and shipping we will pay what 2000$ ... at this price give us the docking station at least... and good cables and some psychological therapy after all the work we have to do to buy theirs overpriced products

Users who are viewing this thread