


HiFiMAN - EF400 (Ex-Demo Unit)
Desktop R2R DAC & Headphone AmpGET 18% GST INPUT
One of the reasons headphones and earphones in India are more expensive than overseas is
because of the Goods & Services Tax in India.
Don't let the GST input go to waste
especially if you can avail an offset.
All products sold on Headphone Zone carry
a GST compliant invoice and all products sold include an 18% GST.
Simply enter
your GST number at the time of checkout.
Browse EMI Plans
Low Cost EMI Options through Credit Cards
ICICI Bank
3
Low Cost EMI
₹ 5,134
₹ 401
₹ 324
6
Low Cost EMI
₹ 2,618
₹ 707
₹ 572
9
15.99%
₹ 1,780
₹ 1,017
12
15.99%
₹ 1,361
₹ 1,331
18
15.99%
₹ 943
₹ 1,970
24
15.99%
₹ 734
₹ 2,625
HDFC Bank
3
Low Cost EMI
₹ 5,134
₹ 402
₹ 324
6
Low Cost EMI
₹ 2,618
₹ 708
₹ 572
9
16%
₹ 1,780
₹ 1,018
12
16%
₹ 1,361
₹ 1,331
18
16%
₹ 943
₹ 1,971
24
16%
₹ 734
₹ 2,627
SBI Bank
3
Low Cost EMI
₹ 5,138
₹ 414
₹ 333
6
Low Cost EMI
₹ 2,610
₹ 663
₹ 534
9
15%
₹ 1,772
₹ 953
12
15%
₹ 1,354
₹ 1,246
18
16%
₹ 943
₹ 1,971
24
16%
₹ 734
₹ 2,627
Axis Bank
3
Low Cost EMI
₹ 5,134
₹ 402
₹ 324
6
Low Cost EMI
₹ 2,618
₹ 708
₹ 572
9
16%
₹ 1,780
₹ 1,018
12
16%
₹ 1,347
₹ 1,162
18
16%
₹ 943
₹ 1,971
24
16%
₹ 734
₹ 2,627
Other EMI Options through Credit Cards
Citi Bank
3
14%
₹ 5,117
₹ 351
6
14%
₹ 2,603
₹ 618
9
16%
₹ 1,780
₹ 1,018
12
16%
₹ 1,361
₹ 1,331
18
16%
₹ 943
₹ 1,971
24
16%
₹ 734
₹ 2,627
Kotak Mahindra Bank
Tenure
Interest%
Installment
Interest
3
16%
₹ 5,134
₹ 402
6
16%
₹ 2,618
₹ 708
9
16%
₹ 1,780
₹ 1,018
12
16%
₹ 1,361
₹ 1,331
18
16%
₹ 943
₹ 1,971
24
16%
₹ 734
₹ 2,627
RBL Bank
3
13%
₹ 5,108
₹ 326
6
14%
₹ 2,603
₹ 618
9
15%
₹ 1,772
₹ 953
12
15%
₹ 1,354
₹ 1,246
18
15%
₹ 936
₹ 1,844
24
15%
₹ 727
₹ 2,455
Standard Chartered Bank
3
13%
₹ 5,108
₹ 326
6
13%
₹ 2,595
₹ 574
9
14%
₹ 1,765
₹ 888
12
14%
₹ 1,347
₹ 1,162
INDUSIND Bank
3
14%
₹ 5,117
₹ 351
6
14%
₹ 2,603
₹ 618
9
15%
₹ 1,772
₹ 953
12
15%
₹ 1,354
₹ 1,246
18
15%
₹ 936
₹ 1,844
24
15%
₹ 727
₹ 2,455
HSBC Bank
3
12.50%
₹ 5,104
₹ 314
6
12.50%
₹ 2,592
₹ 552
9
13.50%
₹ 1,762
₹ 856
12
13.50%
₹ 1,343
₹ 1,119
18
13.50%
₹ 925
₹ 1,654
YES Bank
3
13%
₹ 5,108
₹ 326
6
13%
₹ 2,595
₹ 574
9
14%
₹ 1,765
₹ 888
12
14%
₹ 1,347
₹ 1,162
18
15%
₹ 936
₹ 1,844
24
15%
₹ 727
₹ 2,455
Bank of Baroda
3
13%
₹ 5,108
₹ 326
6
14%
₹ 2,603
₹ 618
9
14%
₹ 1,765
₹ 888
12
15%
₹ 1,354
₹ 1,246
18
15%
₹ 936
₹ 1,844
24
16%
₹ 734
₹ 2,627
American Express
3
14%
₹ 5,117
₹ 351
6
14%
₹ 2,603
₹ 618
9
14%
₹ 1,765
₹ 888
12
14%
₹ 1,347
₹ 1,162
18
15%
₹ 936
₹ 1,844
24
15%
₹ 727
₹ 2,455
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Why HiFiMAN is Special
Designed in China
Established & Reputed
Trust us, our reputation in the audio world speaks for itself!
This headphone or gear comes from a well-respected brand known for its high-quality audio equipment, so you can be confident in your purchase.
If you see a product marked as “🎖️ Established & Reputed”, it means you're getting a top-tier device from a brand that's earned its stripes in the audio industry.
Specialist
A masterpiece from the experts who know audio inside and out!
This headphone or gear is crafted by specialists who know their stuff, ensuring every detail is perfect.
If you see a product marked as “🌟 Specialist”, it means you're choosing a device designed by experts who specialize in creating this specific category of device.
Born in 2005
Why we love this DAC/Amp
Premium Economy
Sensible spending and class above in quality.
This headphone or gear offers top-notch sound and performance without much impact on your pocket, promising a delightful experience that exceeds your expectations at an economical price point.
If you see a product marked as “💎 Premium Economy," it indicates that you're getting a high-quality audio product with exceptional sound clarity and reliable performance, all at a budget-friendly price.
Serious Audiophiles Only
Diving deeper into exploring the hobby is never enough.
If you're an audiophile on a hunt for a device that meets your high standards, this is one such headphone or gear designed for discerning audiophiles like you in mind.
If you see a product marked with “🦈 Serious Audiophiles Only" we assure you that this device can match your depth of knowledge and expertise to take your passion for audio to the next level.
Audiophile Community Favourite
This headphone or gear has a seal of approval from our audiophile community.
It is hit among the pickiest of audio enthusiasts. It comes with two thumbs up and is the community’s and one of our favourites.
If you see a product marked as “🦋 Audiophile Community Favourite”, you're in for a sonic treat with top-tier sound quality that will make your ears swoon and elevate your listening experience to new heights!
Incredibly Popular
Some things deserve all the attention.
This headphone or gear is a crowd favourite, winning over fans everywhere with its undeniable audio quality.
If you see products marked as “🥇 Incredibly Popular”, you’re opting for a tried-and-true choice that’s loved by many, ensuring you're getting something that’s proven to be awesome and widely acclaimed.
Our Team's Favourite
Cause after all, we are audiophiles first!
This headphone or gear has won the hearts of our team, standing out as a top pick among our gurus.
If you see products marked as “💙 Our Team’s Favourite”, you're choosing a product that’s been tested, loved, and enthusiastically recommended by our team, giving you confidence that it’s a standout choice!
For Audiophiles at Home
Cause music hit differently when you are in your own space.
This headphone or gear is perfect for those who demand exceptional sound quality in their personal sanctuary.
If you see products marked as “🏠 For Audiophiles at Home”, get ready to transform your living space into an audiophile's paradise, with rich, immersive sound that makes every listening session a masterpiece.
Connect With Cable
This device comes with multiple connectivity options. Be sure to check if your source and output support these input and output options.
Why it Sounds Amazing
DAC Chip
Know the secret to your pristine audio.
This headphone or gear reveals the secret sauce behind superior audio quality, highlighting the presence of a high-performance DAC chip for pristine sound reproduction.
If you see products marked as “⚙️ DAC Chip”, expect to experience your music with unparalleled clarity, detail, and fidelity, ensuring that every note and nuance is faithfully reproduced for your listening pleasure.
Power Output
When you need that juice to get the best out of your products.
This headphone or gear packs a punch, revealing the product's impressive power output capabilities, ensuring it can handle even the most demanding products with ease.
If you see products marked as “🚀 Power Output”, you're in for a treat with robust performance for driving high-fidelity products without breaking a sweat.
Balanced Output
Upgrading from single-ended to balanced can be the easiest way to improve your sound.
This DAC, Amp or Hi-Res player offers a balanced output, ensuring pristine audio quality with minimised interference and enhanced clarity for your listening pleasure.
If you see a product marked as "⚖️ Balanced Output”, get ready for a symphony of crystal-clear tunes, free from any unwanted noise drama!
DEMO UNIT
Headphone Zone Certified Demo Headphones
Our careful selection of demo headphones gives you the experience of pre-burned in headphones - at drop dead prices. We do this sale every year to clear up our existing demos and to make way for new units instead. These demo headphones have been used at our Experience Studio in Mumbai. The pictures above depict the condition of the product and also indicate the accessories available with the headphone. For any specific questions about the condition please get in touch with us! While the product itself is fully tested by our Headphone Gurus and the outer packaging may have suffered some damage.
Get The Best Deal
You may or may not get the original packaging or some accessories may be missing & because of the fact that they've been extensively used as a demo at the Experience Studio, we give a good discount compared to a new gear.
Unchanged Policies
Received a defective Demo unit? Return it under our 7 Day Replacement Guarantee Policy.
P.S. If you do not like your gear, unfortunately we will not be able to accept the return.
Pre-Burned In
Demo headphones save you the time of burning in new headphones. Typically, brand new headphones take up to weeks to fully break in and sound as good as they should. With demo headphones, you get to enjoy the best sound out of the box.
Unbiased Customer Service
We have the same Headphone Zone customer support experience for Demo Units or any products.
Consider It Vintage
Vintage products have a certain charm that cannot be put into words. Think of old, discontinued demo headphones as vintage. They have a story; they have, how-to-say, character.
Professionally Inspected
A thorough inspection means you receive a 100% working headphone with no sound output issues.
IN THE BOX
BOX CONTENTS | 1. HiFiMAN EF400 (Demo Unit) |
WARRANTY | Not Available |
DESCRIPTION
BALANCED DAC & HEADPHONE AMP FEATURING HIMALAYA R2R DAC
HiFiMAN proudly presents the all-new EF400, a Balanced DAC & Headphone Amp that combines the newly developed technology, including the company's superior HIMALAYA R2R DAC architecture. The EF400 is a modern desktop DAC and amplifier delivering Next-Level Sonic Performance. With the high-level technology developed by HiFiMAN, it comes as no surprise that the HIMALAYA R2R DAC had been a recipient of the 2022 lifestyle VGP Gold Technology Award held in Japan.



MASSIVE POWER OUTPUT OF 4.4 W PER CHANNEL DELIVERING SUPERIOR SOUND
The HiFiMAN EF400 is a modern desktop DAC & Amp solution. Providing Ultra-high efficiency and low power consumption at maximum stability of 4.4W per channel balanced output. HiFiMAN EF400 is embedded with oxygen-free copper wire wound toroidal transformer, HIMALAYA R2R DAC module, 30000uf large capacitors, and high current amplifier circuit to deliver optimum and stable power outputs.



EXPERIENCE THE PERFORMANCE OF THE R2R DAC, A RARE DELIGHT MADE POSSIBLE BY HIFIMAN
The HiFiMAN EF400 DAC & Amp architecture is designed with a discrete HIMALAYA R2R DAC module, based on an FPGA algorithm. It's an excellent match for high-performance audio equipment because of its low audio frequency range, minimal out-of-band noise, and low energy consumption. With a maximum resolution of 24 bits, the HIMALAYA DAC module supports the standard PCM music signal provided by the most common IIS (Integrated Interface of Sound) audio interface. A DAC, buffer, and active filter result in an unequaled balanced output for outstanding performance from a Class AB DAC/amplifier setup. On a 36 Ohms equivalent load, the four-channel differential amplifier circuit produces a maximum output of 10.7 Vrms (THD1%). The result is a perfectly balanced output that is unrivaled.



OPTIMAL BUILD AND SUPREME CONNECTIVITY OPTIONS WITH 4-LEVEL GAIN FUNCTION SWITCH
EF400 has a polished and stylish chassis which gives it a robust feel and premium look. The compact physical dimensions of the EF400 contradict its substantial output. Measuring 246.5mm(L)×228mm(W)×61mm(H), the EF400 requires the bare minimum of desktop or rack space. The front panel includes two unbalanced outputs - 6.35mm, and 3.5mm, and two balanced outputs 4.4mm, XLR four-pin. In addition, EF400 also offers a four-level gain function switch with High Gain NOS, High Gain OS, Low Gain OS, Low Gain NOS Headphone Out, and volume control. The rear input panel includes jacks for USB-B and USB-C source connectors, dual (L/R) XLR three-pin fully balanced line outputs, and is a rarity in products.



SPECS
THD+N (LINE OUT) | Between 0.002% and 0.004% |
CHANNEL SEPARATION | 125±3dB |
SNR | 118±3dB (A Weighted) |
MAXIMUM POWER OUTPUT | 4.4W per channel |
DIMENSIONS | 246.5mm (L) × 228mm (W) × 61mm (H) |
WEIGHT | 3.08kg |
BOX CONTENTS | 1. HiFiMAN EF400 (Demo Unit) |
OTHER DETAILS
GENERIC NAME | DAC & Amp |
COUNTRY OF ORIGIN | China |
IMPORTER DETAILS | Importers Name: Hifiman Electronics India Pvt. Ltd Address: No: 229, Ground Floor, 18th Main, 5th Cross,6th Block, Koramangala, Bengaluru, Karnataka-560076 Contact No: 080-48534996 |
DIMENSIONS | 246.5 x 228 x 61mm |
NET QUANTITY | 1 |
MANUFACTURER DETAILS | Name: Kun Shan Corporation Address: No.88, Xueyuan Rd. Kun shan city, Jianjhu, 215300, P.R. China |
PACKAGE CONTENTS | HiFiMAN EF400 |
Headphone Zone Certified Demo Headphones
Our careful selection of demo headphones gives you the experience of pre-burned in headphones - at drop dead prices. We do this sale every year to clear up our existing demos and to make way for new units instead. These demo headphones have been used at our Experience Studio in Mumbai. The pictures above depict the condition of the product and also indicate the accessories available with the headphone. For any specific questions about the condition please get in touch with us! While the product itself is fully tested by our Headphone Gurus and the outer packaging may have suffered some damage.
Get The Best Deal
You may or may not get the original packaging or some accessories may be missing & because of the fact that they've been extensively used as a demo at the Experience Studio, we give a good discount compared to a new gear.
Unchanged Policies
Received a defective Demo unit? Return it under our 7 Day Replacement Guarantee Policy.
P.S. If you do not like your gear, unfortunately we will not be able to accept the return.
Pre-Burned In
Demo headphones save you the time of burning in new headphones. Typically, brand new headphones take up to weeks to fully break in and sound as good as they should. With demo headphones, you get to enjoy the best sound out of the box.
Unbiased Customer Service
We have the same Headphone Zone customer support experience for Demo Units or any products.
Consider It Vintage
Vintage products have a certain charm that cannot be put into words. Think of old, discontinued demo headphones as vintage. They have a story; they have, how-to-say, character.
Professionally Inspected
A thorough inspection means you receive a 100% working headphone with no sound output issues.
BOX CONTENTS | 1. HiFiMAN EF400 (Demo Unit) |
WARRANTY | Not Available |
BALANCED DAC & HEADPHONE AMP FEATURING HIMALAYA R2R DAC
HiFiMAN proudly presents the all-new EF400, a Balanced DAC & Headphone Amp that combines the newly developed technology, including the company's superior HIMALAYA R2R DAC architecture. The EF400 is a modern desktop DAC and amplifier delivering Next-Level Sonic Performance. With the high-level technology developed by HiFiMAN, it comes as no surprise that the HIMALAYA R2R DAC had been a recipient of the 2022 lifestyle VGP Gold Technology Award held in Japan.



MASSIVE POWER OUTPUT OF 4.4 W PER CHANNEL DELIVERING SUPERIOR SOUND
The HiFiMAN EF400 is a modern desktop DAC & Amp solution. Providing Ultra-high efficiency and low power consumption at maximum stability of 4.4W per channel balanced output. HiFiMAN EF400 is embedded with oxygen-free copper wire wound toroidal transformer, HIMALAYA R2R DAC module, 30000uf large capacitors, and high current amplifier circuit to deliver optimum and stable power outputs.



EXPERIENCE THE PERFORMANCE OF THE R2R DAC, A RARE DELIGHT MADE POSSIBLE BY HIFIMAN
The HiFiMAN EF400 DAC & Amp architecture is designed with a discrete HIMALAYA R2R DAC module, based on an FPGA algorithm. It's an excellent match for high-performance audio equipment because of its low audio frequency range, minimal out-of-band noise, and low energy consumption. With a maximum resolution of 24 bits, the HIMALAYA DAC module supports the standard PCM music signal provided by the most common IIS (Integrated Interface of Sound) audio interface. A DAC, buffer, and active filter result in an unequaled balanced output for outstanding performance from a Class AB DAC/amplifier setup. On a 36 Ohms equivalent load, the four-channel differential amplifier circuit produces a maximum output of 10.7 Vrms (THD1%). The result is a perfectly balanced output that is unrivaled.



OPTIMAL BUILD AND SUPREME CONNECTIVITY OPTIONS WITH 4-LEVEL GAIN FUNCTION SWITCH
EF400 has a polished and stylish chassis which gives it a robust feel and premium look. The compact physical dimensions of the EF400 contradict its substantial output. Measuring 246.5mm(L)×228mm(W)×61mm(H), the EF400 requires the bare minimum of desktop or rack space. The front panel includes two unbalanced outputs - 6.35mm, and 3.5mm, and two balanced outputs 4.4mm, XLR four-pin. In addition, EF400 also offers a four-level gain function switch with High Gain NOS, High Gain OS, Low Gain OS, Low Gain NOS Headphone Out, and volume control. The rear input panel includes jacks for USB-B and USB-C source connectors, dual (L/R) XLR three-pin fully balanced line outputs, and is a rarity in products.



THD+N (LINE OUT) | Between 0.002% and 0.004% |
CHANNEL SEPARATION | 125±3dB |
SNR | 118±3dB (A Weighted) |
MAXIMUM POWER OUTPUT | 4.4W per channel |
DIMENSIONS | 246.5mm (L) × 228mm (W) × 61mm (H) |
WEIGHT | 3.08kg |
BOX CONTENTS | 1. HiFiMAN EF400 (Demo Unit) |
OTHER DETAILS
GENERIC NAME | DAC & Amp |
COUNTRY OF ORIGIN | China |
IMPORTER DETAILS | Importers Name: Hifiman Electronics India Pvt. Ltd Address: No: 229, Ground Floor, 18th Main, 5th Cross,6th Block, Koramangala, Bengaluru, Karnataka-560076 Contact No: 080-48534996 |
DIMENSIONS | 246.5 x 228 x 61mm |
NET QUANTITY | 1 |
MANUFACTURER DETAILS | Name: Kun Shan Corporation Address: No.88, Xueyuan Rd. Kun shan city, Jianjhu, 215300, P.R. China |
PACKAGE CONTENTS | HiFiMAN EF400 |

"The EF400 is actually very good sounding, musical, coherent and expressive with the most analogue timbre, it will play your music very close to reality with every headphones you throw at it, even the difficult to drive ones."
Read More"The EF400 has unique attributes that are hard to find in a single package. The high output power coupled with the R2R DAC is a rarity."
Read More"It feels premium on and out, and for whoever wants a flawless device, with its matte-black frame, the HiFiman EF400 is a sure choice."
Read More