Hifiman EF2C User Manual

HIFIMAN EF2C

Owner's Guide

www.hifiman.com

HIFIMAN EF2C

Thank you for purchasing the HIFIMAN EF2C, a hybrid headphone

amplifier which combines vacuum tube sound quality with solid-state

technology to deliver outstanding performance.

This Owner's Guide is intended to provide a useful overview of your

new EF2C and how to best install and operate it for many years of

enjoyment, safety and satisfaction. Please take the time to familiarize

yourself with its features. If you have any questions or need additional

information, contact your authorized HIFIMAN dealer.

Owner's Guide

Product Overview

The HIFIMAN EF2C is a hybrid amplifier design which combines vacuum

tube and solid state design. Unlike traditional vacuum tube amplifiers, the

EF2C significantly improves the condition of the power source which

in turn increases the output power as well as prolongs the life of the

vacuum tube and the amplifier. The simple signal route and the selected

audiophile elements will provide you with years of reliability, safety, and

enjoyment.

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HIFIMAN EF2C

Key Features

● Hybrid design: Combines vacuum tube with solid state technology

● Advanced Step Potentiometer for precise volume control

● USB DAC chip: CM102S

● Vacuum tube: Chinese 6J1 x 2（6AK5）

● OP-amp: OPA2604

● Separate power supply

● Inputs: USB and CD input

Specifications

●

Input impedance: 47k Ohms

●

Output impedance: 32 - 300 Ohms

●

Max. Power Output: 600mW@35 Ohms

Owner's Guide

●

Line-in Max. Output: 4.6V Distortion: 2%

●

USB DAC Max. Output: 3.2V Distortion: 0.46%

●

Frequency response: 20Hz-20kHz

●

S/N: 90dB

●

Power supply: 110v/220v

●

Dimensions: 5.7" (144mm) Wide x 4.3" (110mm) Deep x 3.1" (78mm) High

●

Weight: 3lbs (1.36kg)

●

Accessories: USB cable, power supply

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