Building upon the success of 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, and ensuring the best sound quality possible.
With its dual THX AAA788+ amplification, the K7 is able to effortlessly 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, allowing for a consistent listening experience. 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 — ensuring it delivers the best possible sound signal, whatever the source. And the headphone amplifier and preamp also ensures accurate handling of all digital audio files, at up to 32-bit/384kHz PCM or DSD256, thanks to the dual-clock management of the XMOS XUF208 decoding chip.
To guide the user, the FiiO K7 indicator light surrounding the volume dial displays different colors dependent upon different audio sampling rates being received: 48kHz and below will display blue; 48kHz or more displays yellow; DSD files display as green.
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; ensuring the K7 delivers a consistent high-quality listening experience.
Unfortunately, manufacturers in this product segment still continue to ignore the qualities of USB-C and Power Delivery, and the K7 not only is still powered by an external 12V switching power supply, while the USB interface still uses the obsolete B Type connector. This is a great example of a category that could greatly benefit from the latest USB technology for both power and streaming avoiding further shipping of redundant power adapters and manufacturing of old USB cables.
And we have no doubt that FiiO would have the knowledge and engineering capabilities to do USB-C. After all Fiio - Guangzhou FiO Electronics Technology Co., Ltd - was established in 2007 by former experts from OPPO, one of China'a largest tech companies in the mobile space. FiiO alone is a high-tech enterprise focused on the research and development of portable music products, including Hi-Res music players, portable headphone amplifier & DAC and headphones/earphones. FiiO is also an ISO9001 manufacturing operation determined to raise the reputation of "Made in China".
www.fiio.com
