HiFiMan EF100 Hybrid Headphone Amplifier

Description:

Key features

• A powerful hybrid headphone amplifier and integrated amplifier
• Can easily drive many high performance headphones
• Serve as a hybrid power amplifier to drive speakers of moderate
• Input impedance: 47k
• Frequency Response: 20 Hz-20 kHz (± 0.2dB)

What is it?

The HIFIMAN EF100 Headphone Amplifier is a powerful hybrid headphone amplifier
and integrated amplifier. Housed in a compact chassis, it has three
independent amplifier sections: a vacuum tube input stage that works as a
shared preamp, a Class AB headphone amplifier, and a Class T speaker power
amplifier. Benefitting from vacuum tube technology, both headphone amplifier
and power amplifier sound warm, smooth, and detailed.

Working as a hybrid headphone amplifier, EF100 Amp produces a 2W output under
a 32 ohm load, so it can easily drive many high-performance headphones. In
addition, this amp can also serve as a hybrid power amplifier to drive
speakers of moderate to high efficiency. In integrated/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, the EF100 Amp combines the warmth of the
vacuum tubes with the high efficiency of a digital amplifier. When the amp is
used as a power amplifier, it can give 4.5W per channel, so it can drive HIFI
speakers of moderate to high efficiency. With its versatile design, the EF100
Amp can deliver remarkable sound from a variety of sources for both headphones
and speaker applications.

How does it work?

The HIFIMAN EF100 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