FiiO K7 Balanced Desktop Headphone DAC/Amp

January 20, 2023

FIIO LAUNCHES THE K7 BALANCED DESKTOP HEADPHONE DAC AND AMPLIFIER

The new FiiO K7 features dual THX AAA 788+ amps, dual AK4493S DACs, and support for audio up to 32Bit 384kHz/DSD256 in a sub £200 package.

The FiiO K7 is a balanced desktop amplifier featuring dual AK4493S DACs, dual THX AAA 788+ amp technology, USB/Optical/Coax/RCA inputs, and both 6.3mm single-ended and 4.4mm balanced headphone outputs.

FIIO K7 BALANCED DESKTOP HEADPHONE DAC/AMP

Building upon the previous FiiO desktop amplifiers, the K7 utilises a truly balanced six-stage audio circuit consisting of: DAC, Low Pass Filter, Volume Control, Buffer Amplifier, Pre-Amplification, and Headphone Out. Throughout this signal path, audio signals from each channel are processed separately by the K7, thereby reducing crosstalk.

DUAL AMPS, DUAL DACS

With its dual THX AAA788+ amplification, the K7 is able to power both low and high-impedance headphones. High and low hardware gain levels can be manually selected from the front panel, allowing users to easily adjust the K7 for headphones of various impedances and sensitivities. The K7 is capable of outputting 560mW into a 300Ω load at 1% distortion; 2000mW into a 32Ω load at 1% distortion.

The FiiO K7 features dual AKM AK4493SEQ DACs, one for each channel of audio. The K7 ensures accurate handling of all digital audio files, at up to 32Bit 384kHz / DSD256, thanks to the dual-clock management of the XMOS XUF208 decoding chip.

DSD

The indicator light surrounding the volume dial displays different colours dependent upon different audio sampling rates being received: 48kHz and below will display blue; 48kHz or more displays yellow; DSD files display as green.

SWITCHING POWER SUPPLY

Powered by an external 12V switching power supply, the K7 features an internal power design architecture consisting of multiple independent stages. The voltage of each of these stages is regulated using low-noise Low-dropout Regulators (LDOs). In addition, intelligent DC protection systems guard against overheating and overload.