HiFiMan EF-5 User Manual

www.hifiman.com

HiFiMAN EF-5

Owner's Guide

www.hifiman.com

01

HiFiMAN EF-5

Owner's Guide

www.hifiman.com

www.hifiman.com

Key Features and Specifications

Thank you for purchasing the HiFiMAN EF-5 high performance hybrid

headphone amplifier.

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

EF-5 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.

Product Overview

The HiFiMAN EF-5 is a powerful hybrid headphone amplifier. The term

hybrid refers to its integration of the clear top 12 AU7 vacuum tube and

the OPA275 as op-amp. The EF-5 is compatible with a wide range of

headphones of different impedances and efficiencies.

● Hand-built headphone amplifier

● Separate DY-1 power supply with toroidal transformer

● Vacuum tube:RCA Clear top 12AU7

● OP-amp: JRC5532 OPA275

● Input: RCA*1

● Output: 1/4” (6.35mm) headphone jack

● Detachable IEC power cord

Specifications

●

Frequency response: 20Hz-30kHz

●

Distortion: less than 0.2％

●

S/N: more than 95dB

●

Input impedance: 50k Ohms

●

Output impedance: 2 -2k Ohms

●

Output at 32 Ohms: 15v

●

Power supply: 110v/220v

●

Dimensions:4.33"(110mm)Wide X 10.63"(270mm) Deep

X1.97"(50mm) High

●

Weight: 81.1Oz (2.3kg)

●

Accessories: 12AU7 tube, DY-1 power supply(110v-240v)

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