HIFIMAN EF400 Desktop Balanced Headphone DAC& Amplifier with Himalaya R2R DAC, 3.5/4.4/6.35mm Output for Home Audio

HIFIMAN EF400 Desktop Balanced Headphone DAC& Amplifier with Himalaya R2R DAC, 3.5/4.4/6.35mm Output for Home Audio

Q: Nos = no over sampling and os = over sampling? if so, how much over sampling?

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?

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?

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?

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

4.2/5

Product ID: 459165248

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Details

Compatible Devices
Speaker
Connector Type
RCA Auxiliary
Item dimensions L x W x H
24.6 x 22.8 x
Brand
HIFIMAN
Finish Type
Gold

⚡4.4W per channel balanced output

🎧HIMALAYA R2R DAC with 24-bit resolution

🔌Multiple outputs: 3.5mm, 4.4mm, 6.35mm & XLR

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Description

🎶 Elevate your desktop audio game with award-winning power and precision!

AWARD WINNING R 2 R DAC - Embedded HIFIMAN HIMALAYA DAC, winner of the 2022 VGP Gold Technology Award, ensures ultra-precise audio fidelity.
VERSATILE CONNECTIVITY - Supports USB-C, USB-B inputs and multiple headphone outputs including balanced XLR for ultimate compatibility.
CUSTOMIZABLE GAIN MODES - Four-level function switch lets you tailor gain and filter settings for your unique listening preferences.
COMPACT STYLISH DESIGN - Sleek desktop footprint that fits perfectly in any modern home audio setup without sacrificing performance.
POWERHOUSE BALANCED OUTPUT - Delivers 4.4W per channel for crystal-clear, distortion-free sound that outperforms larger amps.

The HIFIMAN EF400 is a compact yet powerful desktop DAC and amplifier featuring the acclaimed HIMALAYA R2R DAC module with 24-bit resolution. It delivers 4.4W per channel balanced output through a fully differential Class AB amplifier, supporting multiple headphone outputs including balanced XLR. Designed for audiophiles seeking high-fidelity sound with versatile connectivity and customizable gain settings, the EF400 combines award-winning technology and sleek design for an unmatched home audio experience.

Specifications

Brand	HIFIMAN
Manufacturer	Hifiman Electronics, Head Direct (Kun Shan Corporation) No.88, Xueyuan Rd. Kun shan city, Jianjhu, 215300,P.R. China, 0512-50190018
Model	EF400
Product Dimensions	24.6 x 22.8 x 6.1 cm; 3.08 kg
Item model number	EF400
Compatible Devices	Speaker
Special Features	RCA, Built In Bluetooth
Mounting Hardware	Power cable
Number of items	1
Audio Output Type	Headphones
Audio Wattage	4.4 Watts
Voltage	220 Volts
Batteries Included	No
Batteries Required	No
Number of Ports	2
Connector Type	RCA, USB
Does it contain liquid?	No
Includes Rechargeable Battery	No
Manufacturer	Hifiman Electronics
Item Weight	3 kg 80 g

Have a Question? See What Others Asked

Nos = no over sampling and os = over sampling? if so, how much over sampling?

can it be used as preamp fot active speakers and control the volume from both?

does this dac/amp works with Playstation 5?

Will this power the Hedd Heddphone or any other hard to power Headphone with enough power?

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