HiFiMan EF600 DAC and Headphone Amplifier

High Performance Desktop DAC / Headphone Amp with Hymalaya Pro DAC Modules

HiFiMan's EF600 balanced desktop DAC/amplifier sets a lofty standard in audiophile-grade desktop performance.

Designed for use as a DAC, or as a dedicated headphone amplifier, the EF600 features an industrial design that is not only aesthetically appealing, but also serves as a headphone stand, reducing desktop clutter. Included are fully balanced input/output connections, high-resolution Bluetooth connectivity, an independent power supply, and a thermal optimized tower case.

The Hymalaya Pro DAC Module

"The EF600 has the power and advanced technology to stand out from a field that too often relies on off-the-shelf technologies instead of incorporating technologies that are truly unique to the category," says Dr. Fang Bian, President and CEO, HiFiMan Electronics. "The Hymalaya Pro DAC module alone represents a giant leap forward from DACs that were considered state-of-the-art only a few short years ago."

HiFiMan’s Hymalaya Pro consists of an array of highly accurate resistors that use a "ladder" method of conversion. This approach converts the digital signal with maximum accuracy and overall musicality. Signal-to-noise ratio, total harmonic distortion, and energy consumption are at their musical and efficient best. Hymalaya Pro supports the PCM signal transmitted by the most common IIS (Integrated Interface of Sound) audio interface, with a maximum 24Bit resolution.

The EF600 includes two Hymalaya Pro modules for unsurpassed sonic output, especially when compared to the typical PCM1704k module. The Hymalaya Pro, with the added support of a new algorithm and 0.01% precision resistors, reaches a THD (total harmonic distortion) rate of -60dB 2%. In plain English, distortion is reduced to a previously unheard of low with no audible distractions.

An Array of Connectivity Choices

An array of RCA and XLR inputs allows the EF600 to be used as a high-performance headphone amplifier that is fully compatible with most CD and SACD players, thanks to its balanced output.

The front panel includes four balanced outputs – 6.35mm single-ended, 3.5mm single-ended, 4.4mm balanced, XLR four-pin balanced – in addition to a four-level function switch and volume control. The rear input panel includes jacks for RCA, USB-B, and USB-C source connectors, in addition to dual (L/R) XLR three-pin full balanced line outputs.

Bluetooth connectivity is achieved with an upgraded design that supports multiple codecs, including LDAC, delivering lossless sound reproduction for audiophile-level sonics.

Outstanding Overall Design and Performance

The EF600 requires the bare minimum of desktop or rack space. The physical dimensions are: 4" x 5-1/4" (top), 4" x 6-1/2" (bottom), and 11" (height).

Signal-to-noise ratio is measured at 118dB (weighted), channel separation is 131+/-3dB, and THD+N (line out) is 0.0014% (-8dB).

Maximum power output is robust at 5.12 wpc @32R balanced/1.8 wpc @32R unbalanced, giving the EF600 the power to drive the majority of low-efficiency planar headphones, including HiFiMan's flagship Susvara model.