HIFIMAN EF2C USB-DAC Headphone Amplifier
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- Sublime and Organic Tone from the Vacuum Tube
- The hybrid design employs two 6J1 tubes for its input stage and incorporates the OPA2604 along with discrete components for its output.
- Step Potentiometer for Improved Volume Control
- The EF2C is meticulously designed for discriminating music listeners who demand performance and value.
- A compact desktop design with an integrated USB-DAC inherits the power and performance from the EF2A.
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From the manufacturer
USB-DAC Headphone Amplifier
Sublime and Organic Tone from the Vacuum Tube
Combines the beautiful, warm sounding of the vacuum tube with the advantages of low distortion and high S/N rate from the solid-state amplifier.
Hybrid Design: Vacuum Tube + Solid State Performance
The hybrid design employs two 6J1 tubes for its input stage and incorporates the OPA2604 along with discrete components for its output.
Step Potentiometer for Improved Volume Control
The Step Potentiometer is designed for precise control and accurate channel balance (with less than 0.0001 in errors). This results in excellent channel balance and soundstage.
Hi-Fi Sound Quality
The EF2C is meticulously designed for discriminating music listeners who demand performance and value.
Style and Power
A compact desktop design with an integrated USB-DAC inherits the power and performance from the EF2A. The EF2C is the perfect match for most PC-driven audiophile headphones.
Input Impedance: 47k Ohms
Max. Power Output: 600mW@35 Ohms
Line-in Max. Output: 4.6V Distortion: 2%
USB DAC Max. Output: 3.2V Distortion: 0.46%
Frequency Response: 20Hz-20kHz
Weight: 3lbs (1.36kg)
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|Sold By||—||Nargos||Electronics Expo||SHENZHENAUDIO||S.M.S.L Audio||K&M Camera Since 1976|
|Item Dimensions||4.33 x 5.67 x 3.07 in||3.93 x 3.81 x 7.08 in||10.8 x 12.8 x 3.6 in||3.11 x 1.73 x 3.11 in||4.06 x 5.39 x 1.3 in||5.12 x 4.72 x 2.17 in|
Specially designed Travel Case for FiiO A5, E12A, E18 KUNLUN Android Phone DAC & AMP, Cayin C5, Xonar U7 MK7.1 USB DAC
High end and durable detachable wristband
Strong Semi-hard zipper case giving best solution for Carrying and Storage protection
Compact size and easy to use
also suitable for travel and storage of handy powerbank, in-ear headphone, Bluetooth earphone, lense and other small device.
Note: zipper case only, device for illustration only
Top customer reviews
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To understand this issue, let's first make sure we all understand the two parts that this product is, a DAC and amp, separately.
The DAC takes the digital audio file that is on your computer, and converts it to an analog signal that your headphones or speakers can play. It is basically a USB connected external sound card. The amp takes that analog signal and makes its strength and impedance optimal for your headphones (or speakers).
The DAC on this unit has issues with clipping. So, if you plug this directly into your USB cable from your computer, as it's intended to do, it will distort. You can "fix" this problem by lowering the volume within your player (ie iTunes or foobar, not your computer's system volume), to about 60% or lower. However, this is a poor solution. Ultimately, if you use the built in DAC, you are forced to use a half measure "work around" that's annoying, and if you don't, the signal is distorted before it's even amplified, meaning it's junk before it ever really gets started. However, if you bypass the DAC, it's great.
For me, I never intended to use the built in DAC, other than very occasionally. I only intended to use the amp portion, via the RCA inputs, from another DAC I owned (the AudioEngine D1). And the amp portion of this unit works beautifully. I have replaced the stock tubes with Voshkod EF95 tubes, and the resulting sound is crisp, dynamic, full and powerful. The stock tubes are okay, but I bought this amp to change out tubes, and there are several tubes that I think can change the sound quite a bit, and a few that I think improve it. I prefer this amp to most other hybrid designs in its price range (schiit vali, various starving student builds, aune, etc).
The volume stepped attenuator is a vast improvement from the EF2A's volume control. The build quality is great. It's just weird that they screwed up the output level of the DAC. Fortunately, even as an amp only, it's well worth the price.
If you want a DAC to use with this, the AudioEngine D1 or Schiit Modi 2 Uber both work great with it, and are fairly cheap. If you want a combo unit with a built in DAC and amp together, I would look elsewhere.
I always have thought that you can get a good HI FI stuff when you start researching thru forum and reviews and I consider this EF2C-DAC/AMP is a good example of Quality/Price. On one hand you get a sound fat, warm, and lush so addictive tube sound that can be combined depending on your Tube Rolling taste for instance I have bought two NOS Telefunker 6J1 tubes that give a crisp and incredible soundstage to my cans. On the other hand, this Amplifier can manage and power both Dynamic and Planner technologies without losing music quality. On dynamic side I own a pair of Ath-ESW9 and on Planner I got the Audeze Sine. I must confess since my SINE cans arrived to home some months ago I could not let to listen these planar addictive headphones that make a divine match with HIFIMAN EF2C-DAC/AMP. I guess that is why Audeze and Hifiman are the leads companies on planner magnetic technology.
I have tested this Amplifier with 192kps MP3s(Google music), HI-Res Audio (Tidal) and DSD256 11.2MHz online music a definitely you will find a WOW factor when you listen again your favorites music tracks.
As said before you can get a starting audiophile amplier that will make your headphone sounds amazin' without killing your budget, but if you have Deep Pockets, you can target higher preys like Woo, Dark Voices or Schiit Mjolnir 2 tube amplifiers.
Most recent customer reviews
It even works with FreeBSD!
11/2017 Update - I just noticed that the power LED has stopped working.Read more