HIFIMAN EF-100 + Sonic Electronix Bonus Pack 3

Hybrid Vacuum Tube/USB DAC Headphone Amplifier + Extended Warranty & Exchange Policy

Here's What You Get with the Bonus Pack 3:

  • HIFIMAN EF-100 Hybrid USB DAC Headphone Amplifier
  • 3-Year Sonic Electronix Warranty (Headphones Only)
  • Extended 180 Day Exchange Policy (Some Exclusions Apply)

  • We apologize

    This item has been discontinued

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    HIFIMAN EF-100 Hybrid Vacuum Tube/USB DAC Headphone Amplifier

    The HIFIMAN EF-100 Headphone Amplifier Offers an Incredible Listening Experience

    The HIFIMAN EF-100 is a powerful hybrid headphone amplifier and integrated amplifier. Housed in its compact chassis lie three independent amplifier sections: a vacuum tube input stage works as a shared preamp, a Class AB headphone amplifier, and a Class T speaker power amplifier. Benefiting from vacuum tube technology, both headphone amplifier and power amplifier sound warm, smooth, detailed and musical. Working as a hybrid headphone amplifier, EF-100 can produce a 2w output under a 32 ohm load so it can easily drive many high performance headphones. In addition, EF-100 can also serve as a hybrid power amplifier to drive speakers of moderate to high efficiency. In power amplifier mode, the amplifier output line is fully independent from the digital amplifier line used in the headphone amplifier. Driven by front stage’s vacuum tubes, EF-100 combines the warmth vacuum tubes are known for with the high efficiency of a digital amplifier. It is the best of both worlds. When EF-100 is used as a power amplifier, it can give 4.5 watts per channel so it can drive HIFI speakers of moderate to high efficiency. At last, with its versatile design EF-100 can bring music to life from a variety of sources for both headphones and speaker applications.

    The HIFIMAN EF-100 Headphone Amplifier Offers an Incredible Listening Experience

    HIFIMAN EF-100

    Hybrid Vacuum Tube/USB DAC Headphone Amplifier for High Performance Headphones
    Quantity: 1

    General Features:

    • Premium audiophile hybrid vacuum tube headphone amplifier
    • Features 3 independent amplifier sections:
      • Vacuum tube input stage that functions as a preamp
      • Class AB headphone amplifier
      • Class T speaker power amplifier
    • Listen through your favorite headphones or a pair of speakers
    • Integrated 3.5mm, stereo RCA and type B USB inputs
      • USB input and built-in DAC allow you to stream CD quality music from your computer
    • Full size front stereo headphone output
    • Binding post speaker connectors
    • Vacuum tube input stage brings warmth, detail and spaciousness to your music
      • Utilizes a single 6N3J dual triode vacuum tube input stage
    • High output headphone amplifier designed for use with high performance headphones like the HiFiMAN HE-560 and HiFiMAN HE-6
      • Class AB solid state design
      • Output Impedance: 32-300 ohms
        • Output at 32 ohms: 7.8V, 2W
      • Signal-to-Noise Ratio: 95dB
      • Frequency Response: 20-20,000 Hz
    • Drives speakers with moderate to high efficiency levels
      • Class T solid state design
      • Power Output: 4.5W x 2 into 4 ohms
      • Frequency Response: 20-20,000 Hz
    • Dimensions: 7-7/8"W x 10-3/4"D x 3-3/4"H
    • Authorized Internet Dealer
    • 1-year Manufacturer's Warranty

    Note: HiFiMAN products can only be shipped to customers in the United States

    Also found as: EF100

    3-Year Warranty for Headphones & Portables Valued Between $200.01 - $500

    3-Year Sonic Electronix Warranty for Headphones & Portables Valued Between $200.01 - $500
    Quantity: 1

    General Features:

    • 3-year Sonic Electronix Warranty - on Headphones and Portables valued between $200.01 to $500
    • Coverage begins on date of purchase
    • No hassle warranty that comes with all the bells and whistles and no hidden gotchas
    • Comes fully equipped with a 5-day service guarantee and 24/7 Online access to your warranty contract
    • Protection from ALL mechanical and electrical failures
    • Note: Sonic Electronix warranties are currently only valid in the United States. This includes all 50 States and Puerto Rico.
    • 1-year Manufacturer's Warranty

    Extended 180 Day Exchange w/ 60 Day Return on Select Headphones

    Extended 180 Day Exchange w/ 60 Day Return on Select Headphones
    Quantity: 1

    General Features:

    • If you don't love your new headphones, exchange them within 180 days no questions asked!
      • Only applies to the headphones
      • Must be returned without physical damage in original packaging with all accessories
        • Defective products still eligible for standard 1 year exchange policy
      • Standard 60 day return policy still applies

    Note: Package only valid when purchased with select headphones

    Headphone Amplifier Specifications

    Digital-to-Analog Converter (DAC)
    A Digital-to-Analog converter (also known as a DAC) converts a digital audio signal into an analog signal. This is especially helpful for listen to music from digital sources, such as iPods and smart phones.
    Frequency Response
    The range of frequencies the amplifier will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
    20 - 20000 Hz
    Input Connection
    This is the manner in which the headphone amplifiers receive an input audio signal.
    Stereo RCA
    Output Connection
    This is the manner in which the headphone amplifier will output the audio signal.
    1/4" Plug
    Number of Outputs
    Some headphone amplifiers have a built-in splitter so multiple pairs of headphones can be connected to it. The number specified here is the number of headphones that can be connected to the amplifier.
    The width of the item from left to right (side-to-side) measured in inches.
    The height of the item, measured from top to bottom, in inches.
    The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
    Amplifier Style
    Some headphone amplifiers are designed to be portable and others are meant to be placed on a desk. This will tell you what style of amplifier this item is.

    Warranty and Return Policy

    Parts Warranty Duration
    1 year
    Labor Warranty Duration
    1 year
    Warranty Provider

    Summary of Customer Ratings & Reviews

    Rating Distribution

    5 Star
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    3 Star
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    1 Star

    Average Attribution Rating

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    Sonic Electronix Wiring Guide

    Wiring Diagram Legend

    Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

    Product Name: HIFIMAN EF-100 + Sonic Electronix Bonus Pack 3

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    HIFIMAN EF-100 + Sonic Electronix Bonus Pack 3

    Hybrid Vacuum Tube/USB DAC Headphone Amplifier + Extended Warranty & Exchange Policy


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