---
product_id: 444681695
title: "EF400 Desktop Balanced Headphone DAC& Amplifier with Himalaya R2R DAC, 3.5/4.4/6.35mm Output for Home Audio"
brand: "hifiman"
price: "₩1119230"
currency: KRW
in_stock: true
reviews_count: 6
url: https://www.desertcart.kr/products/444681695-ef400-desktop-balanced-headphone-dac-and-amplifier-with-himalaya-r2r
store_origin: KR
region: South Korea
---

# 4.4W/channel power 10.7 Vrms output 2022 VGP Gold Award EF400 Desktop Balanced Headphone DAC& Amplifier with Himalaya R2R DAC, 3.5/4.4/6.35mm Output for Home Audio

**Brand:** hifiman
**Price:** ₩1119230
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate Your Audio Game with HIFIMAN!

## Quick Answers

- **What is this?** EF400 Desktop Balanced Headphone DAC& Amplifier with Himalaya R2R DAC, 3.5/4.4/6.35mm Output for Home Audio by hifiman
- **How much does it cost?** ₩1119230 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/444681695-ef400-desktop-balanced-headphone-dac-and-amplifier-with-himalaya-r2r)

## Best For

- hifiman enthusiasts

## Why This Product

- Trusted hifiman brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Massive 4.4W per channel output in a sleek, space-saving design.
- • **Versatile Connectivity:** Multiple output options including 3.5mm, 4.4mm, and XLR for all your audio needs.
- • **Award-Winning Technology:** Join the elite with the 2022 VGP Gold Award-winning DAC technology.
- • **Unleash Sonic Brilliance:** Experience audio like never before with the HIFIMAN EF400's Himalaya R2R DAC.
- • **Tailored Listening Experience:** 4-level function switch for customized sound settings to match your mood.

## Overview

The HIFIMAN EF400 is a high-performance desktop DAC and amplifier featuring the award-winning Himalaya R2R DAC technology. With a compact design, it delivers an impressive 4.4W per channel output and supports multiple audio formats and connections, making it the perfect choice for audiophiles seeking superior sound quality in a stylish package.

## Description

Full description not available

## Features

- Massive power and superior sound from a sleek and stylish chassis: The EF400 is the modern desktop DAC/Amp solution, with a compact footprint and price to match, but with sonics that outperform products many times its size. Ultra-high efficiency and low power consumption at maximum stability:4.4W per channel balance output. Embedded with HIFIMAN HIMALAYA R2R DAC- Recipient of 2022 VGP Gold Technology Award (Japan).
- Experience the prized performance of the R2R DAC: HIMALAYA is a discrete R2R DAC (digital-to-analog) module that is based on the FPGA algorithm. The combinations of its low audio frequency range, out-of-band noise, and low energy consumption make it a perfect match for high-performance audio equipment. The HIMALAYA DAC module supports the standard PCM music signal transmitted by the most common IIS (Integrated Interface of Sound) audio interface, with a maximum resolution of 24Bit.
- Full Balance: The four-channel differential structure features a DAC, buffer and active filter that add up to unbeatable fully balanced output for stunning performance from a Class AB DAC/amplifier. The four-channel fully differential amplifier circuit features a maximum output of 10.7 Vrms (THD<1%) on a 36Ω resistor equivalent load. The result: fully balanced output that is beyond compare.
- 4-level Function Switch: High Gain NOS, High Gain OS, Low Gain OS, Low Gain NOS ★Headphone Out (Front Panel): 6.35mm Single-ended; 3.5mm Single-ended; 4.4mm Balanced; XLR 4-Pin Balanced Output. ★Line Out (Rear Panel): CANNON Balanced Output; RCA (Single-ended).★ Input: USB Type C; USB-B
- 110V

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B1MGWGKZ |
| Best Sellers Rank | #222,087 in Electronics ( See Top 100 in Electronics ) #316 in Headphone Amps #1,350 in Audio Component Amplifiers |
| Brand | HIFIMAN |
| Color | Silver |
| Compatible Devices | ["Amplifier", "Headphones", "Computer"] |
| Connector Type | RCA, XLR, USB Type B |
| Customer Reviews | 4.1 out of 5 stars 88 Reviews |
| Finish | Glossy" or "Metallic |
| Global Trade Identification Number | 06925624202408 |
| Item Dimensions | 9.69 x 8.98 x 2.4 inches |
| Item Height | 6.1 centimeters |
| Item Weight | 3.08 Kilograms |
| Item dimensions L x W x H | 9.69 x 8.98 x 2.4 inches |
| Manufacturer | HIFIMAN |
| Model Number | EF400 |
| Number of Items | 1 |
| Number of Ports | 2 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Specific Uses For Product | Home Audio |
| Unit Count | 1.0 Count |

## Product Details

- **Compatible Devices:** ["Amplifier", "Headphones", "Computer"]
- **Specific Uses For Product:** Home Audio
- **Connector Type:** RCA, XLR, USB Type B
- **Color:** Silver
- **Item dimensions L x W x H:** 9.69 x 8.98 x 2.4 inches

## Images

![EF400 Desktop Balanced Headphone DAC& Amplifier with Himalaya R2R DAC, 3.5/4.4/6.35mm Output for Home Audio - Image 1](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)

## Questions & Answers

**Q: Nos = no over sampling and os = over sampling?  if so, how much over sampling?**
A: The EF400 uses HiFimans 'himalaya' R2R DAC which is a custom resistive-ladder chip using individual precision resistors to perform the D->A conversions. Because Dr Bian's decoding arrays are inherently very accurate, they don't benefit much from oversampling unless the digital source is very poor and by not oversampling, its analog output has no sonic artifacts left over from an oversampling stage that must be filtered away.

So I think that the himalaya's oversampling mode is very low like 2 or 4X - HiFiman doesn't disclose their sampling rates, but it doesn't matter - unlike delta-sigma DACs, that must oversample to minimize the distortions inherent in their D->A conversion and the digital filtering required to reduce them to acceptable levels - R2R DACs oversample to increase their conversion accuracy and dynamic range and require little or no post-processing of their analog output.

I've had this EF400 for about a year, and its been flawless, it drives power-hungry planars like HiFiman Edition XS, or Monoprice M1070 with control, authority, and revealing detail. Conversely, switch to its low-output range, and sensitive dynamic headphones like the HiFiman HE-R9, or Harmonicdyne Poseidons are presented against an utterly 'black,' noiseless background.

Yeah, 500 dollars is a pretty stiff hit "Just to listen to headphones..." but I believe that the EF400 is pretty much the end game for any setup costing less than six figures.

Cheers
Jim

**Q: can it be used as preamp fot active speakers and control the volume from both?**
A: No. The rca jacks are fixed volume and the volume knob on the front only controls the headphone jacks.

**Q: does this dac/amp works with Playstation 5?**
A: As long as your PS5 has a USB out, which I think it does, the amp should work. The EF-400 only takes USB-B or USB-C, no optical or USB-A. So be aware of that.

**Q: Will this power the Hedd Heddphone or any other hard to power Headphone with enough power?**
A: I think it has enough power for planar. However, it may not listened good for some headphones, such as LCD-X. You can try it

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great PC DAC/AMP for Gaming and Multimedia
*by J***  on March 25, 2025*

After doing a lot of research online, I was told there would be little reason to buy more expensive dac amps over the K5 Pro that I already own, but surprise surprise, the EF400 made my Planar's sound way better in terms of bass and fullness. I didn't think it would be drastic but A-B testing between both units made it clear enough that it was worth the upgrade. It's also pretty simple to setup and use, I didn't even bother with drivers since it was plug and play. When it came to gaming and watching stuff, as expected it performs exceptionally well. I used High Gain Over Sampling on the Left Knob for Planars and it sounds perfect. Make sure your windows volume is set to 100% and then adjust the Right Knob for volume carefully because this thing can get dangerously loud. Overall very satisfied and I will update this review if this thing dies randomly.

### ⭐⭐⭐⭐⭐ Review after a year of usage
*by A***T on May 6, 2025*

Been using this DAC/AMP for over a year now. I use this with Empyrean II, which still performs very well without any DAC/AMP. However the reason I use this over FiiO7 (the other DAC/AMP I have) is because it emphasizes the good sound design in the bass range. If you want a slight warm touch that could make songs sound "fun", this is a go-to DAC/AMP.Portability: No. Very heavy.Usability: Easy to useComfort: Could be too big to fit on desk. I use it under the desk.Modes: NOS/ OS. High gain / Low gain. I use Low gain OS.

### ⭐⭐⭐ Fine Value with Flaw
*by J***K on September 5, 2022*

This unit must be used with a PC source. When connected to my iPad Pro as a source, NOS mode produces crackling noises throughout any CD-quality tracks. Engaging OS mode makes the crackling go away, but NOS is the preferred mode for myself and most other EF400 owners. After contacting Hifiman, they say there is no fix for this nor any firmware update in the works. The device does not appear to be firmware updatable at all. That being said, it does have a great sound and is a great performer despite this annoying issue. I prefer using my iPad Pro as a source over my gaming PC as it is cleaner and quieter source, and it works perfectly with all my other DACs and DAC/Amps. There is a quirk with this device with its NOS mode for 44.1 sample rate tracks when connected to lower powered source devices such as iPads, so be aware of this and only purchase if you're planning to use with a PC/Mac source.UPDATE: I figured out how to fix the NOS mode buzzing issues, which seem to only happen on CD quality tracks when using an iPad or iOS device as source. The way to fix it is to use Roon and turn on Sample Conversion and set it to Max. I went back and forth turning it on and off and it really does work, made the buzzing go away, and the buzzing comes back when you turn it off. Glad I finally found a workaround. Still was not convenient and cost me extra to purchase Roon.

## Frequently Bought Together

- HIFIMAN EF400 Desktop Balanced Headphone DAC& Amplifier with Himalaya R2R DAC, 3.5/4.4/6.35mm Output for Home Audio
- HIFIMAN HE1000 Stealth Magnet Planar Magnetic Full-Size Over-Ear Open-Back Hi-Fi Reference Grade Headphones for Audiophiles, Home & Studio Listening

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.kr/products/444681695-ef400-desktop-balanced-headphone-dac-and-amplifier-with-himalaya-r2r](https://www.desertcart.kr/products/444681695-ef400-desktop-balanced-headphone-dac-and-amplifier-with-himalaya-r2r)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-24*