EarStudio - HUD100 MK2 Hi-Fi USB DAC


amps & dacs under 10000

HUD100 MK2 | AK4377 DAC Chip | PCM 32Bit/384khz and DSD128 | ARM Cortex | 8 Elaborate Circuit Design | Compatible with Mac or Windows PC, iOS Devices, Android Devices | Versatile Sound Modes | Compact | Jitter Resistant | Led Colors

₹ 7,290 ₹ 15,999 Save ₹ 8,709

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Same day dispatch, if ordered before 2:00 PM. Info Order Placed before 2:00 PM will be shipped within 24 hrs. (Except Sunday and Holidays)

Cash on Delivery Available Info Cash on delivery applicable for order under ₹ 15000

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10 Days Replacement Policy for Manufacturing defects. Info All products are covered by 10 Day Replacement Guarantee. This product is eligible for a free replacement, in case you receive a damaged, defective or different item. Please keep the product in its original condition with all accessories & packaging for a successful return. We may contact you to assess the damage or defect before issuing a replacement. Accessories like cables and eartips are not backed up the manufacturer's warranty.

Please note that physical damage cases need to be brought to our notice within 24 hours.

Simply Contact us through the chat window if you find any issues with your order.


COMPACT, YET HIGH PERFORMANCE: Only 43% Volume Size Compared to ES100MK2. HUD100 provides incredibly powerful performance you can’t expect from such a small device.

YOUTUBE TO HI RES: From YouTube streaming to Hi-Res audio, HUD100 Supports up to PCM 32Bit/384khz and DSD128.

ARM CORTEX: The First portable Dac adopting ARM Cortex processor to implement radsone proprietary algorithms.

ELABORATE CIRCUIT DESIGN: Elaborate 8 Layers circuit design to bring the best audio performance out from such a small size.

HUD100 IS THE FIRST AUDIO DAC TO ADOPT MEMS OSCILLATOR AS A MASTER AUDIO CLOCK: We utilized MEMS oscillator because it provides more clear clocks for all audio circuitry, while conventional crystal oscillator tends to have much more jitter in most situations.


  • BYPASS: Bypass processing mode for pure sound enthusiasts.
  • DCT: Dct Processing mode for users searching for well-dithered analog like sound.
  • DYNAMIC: Radsone-tuned dynamic processing mode for more powerful sound with balance.

HIGH POWER MODE: HUD100 Offers special 2.26Vrms high power output (3.5mm) for high impedance oversized headphone (250 ohm and more)

CONSISTENT FIRMWARE UPDATE: Continuous firmware update will be provided for the best performance of HUD100

COMPATIBLE WITH: Connect directly with Mac or windows PC, ioS device, Android device.


  • Compact, yet high-performance / Plays up to PCM 32bit/384kHz and DSD128 / 45 x 32 x 8mm / 21.5g / USB Type C
  • Jitter-Resilient / The first audio DAC to adopt ARM Cortex processor and MEMS oscillator to implement Radsone's proprietary algorithm and minimize jitter
  • 2 Power x 3 Sound Processing Modes / 1.29Vp Standard, 3.20Vp High Power Output
  • Bypass processing mode for pure sound enthusiasts / DCT processing mode for users searching for well-dithered analog-like sound / Radsone-tuned Dynamic processing mode for more powerful sound with balance
  • Elaborate 8-layer circuit design to bring the best performance out from such a small size



Model Name: HUD100

Product Name: Earstudio HUD100



  • Standard 0.914 Vrms (1.29 Vp)
  • High Power: 2.26 Vrms(3.20 VP)


  • Standard- 105Db(0.00056%)
  • High Power- 102 Db(0.00079%)

Dynamic Range: Standard 118Db

High Power 118Db

Sample Rates: Up to PCM 32bit 384khz, DSD128(Dop)

DAC Chip: AK4377

Desktop Compatibility: Mac OS 10.10 or later windows 7(32/64bit) or later

Mobile Compatibility: Ios 10.3.3/iPhone 6 or later Android 6.0 or later

Dimensions: 45*32*8mm

Weight: 21.5Gram

Package Include:

  • 10cm USBC to C (OTG Included) Cable
  • 12Cm USB A TO C Cable
  • Protective Case
  • Case Holder x 2
  • Double-Sided 3M Sticker x 2
  • Owner’s Manual

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Shipping Policy


We usually ship orders on same day if ordered before 2 pm or within 24 hours if ordered later (except on holidays/sunday, where processing times may be higher) from one of our domestic warehouses based out of Delhi. It normally takes around 1 to 5 business days for delivery. We use premium service partners such as Blue dart, DTDC and Delivery for faster and reliable service. A tracking number will be provided upon shipment.

In very rare cases when order is not received after 10 business days of shipment (extended by number of days when the govt. Restricts movement of goods due to factors such as coronavirus pandemic), please contact us and we will provide you a support.

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Customer Reviews

Based on 3 reviews
P.C.N. (Bengaluru, IN)
Pocket rocket!

I'm using this to drive my Hifiman Deva Pro. The Deva pro has 18ohm impedance and should be relatively easier to drive than a 45ohm IEM, right? Unfortunately no. I have my apple dongles that can easily drive those IEMs to my satisfaction, but they cant drive my Deva Pro and so I was on the lookout for a desktop DAC-Amp. I had my eyes on the IFI stack , Ibassso DC06, xDuoo 602 etc.
Now, this cannot produce power that can match any of the desktop stacks and the Hip Dac does have an edge over this in terms of power too. But, that is all there is to it, POWER! The HUD100 has amazing HW eqs, versatile power and super small.
Coming to sound, I listened to various tracks in the 2nd EQ. The sub-bass rolls very quickly, sibilance is a bit wobbly, treble is not piercing but it is sharp enough to complement the pseudo-sibilance control algorithm the amp has going for it. The music becomes lively and micro acoustics are more apparent throughout the range.
I don't think any headphone portable enough will need more power than this DAC can deliver. This review might not be technical enough, I'm sure there are more nuances a trained ear can pickup, but hey, this is working super well for me!

Soumya Ghosh (Kolkata, IN)
Value for money.

It's a value for money product. Capable of driving headphone. Highly portable. Small size. Audio quality satisfactory for the money.

Arvin Monesseh (Hyderabad, IN)
Affordable and Sensible product range

Fast Delivery, Great Choice of Products.