Innovative, 31-band high-precision lossless PEQ
The K19 features DEL (Dual Engine Limiter) technology, and through proprietary algorithms, the K19 can apply various audio effects such as dynamic range compression (DRC) and dynamic range enhancement (DRE) as well as an advanced limiter to prevent clipping. Also, on the K19 is an adjustable 31-band high-precision lossless PEQ*, which supports direct adjustment of PCM 44.1k~192k audio signals without resorting to sampling rate conversion (SRC). For each band, the gain can be adjusted between a range of +12~-24dB and the Q value can be adjusted between a range of 0.4dB~128dB. And the PEQ curves don’t have to be used only by you – PEQ presets on the K19 can be shared between users. Being able to import and export PEQ presets opens up a whole new dimension to sound adjustment!
*PEQ adjustment is supported on Windows and Mac computers, as well as with the mobile control app
ADI ADSP-21565 with SHARC+ core
For the first time in an FIIO product, the K19 flagship desktop DAC and headphone amplifier utilizes an ADI ADSP-21565 DSP chip with the SHARC+ core backed by a custom ultra-low phase noise femtosecond crystal oscillator. This DSP chip featuring a high clock frequency of 800MHz and capable of 64-bit double precision floating point calculations is what makes the 31-band high-precision lossless PEQ possible in the K19. The ADI DSP chip not only ensures that audio signals after PEQ adjustment are of high quality and with minimal distortion, but it also helps to enable powerful system protection functions that safeguard both the K19, and the other devices and headphones connected to it.
Flagship ESS 8-channel ES9039SPRO x2 DACs
Inside the K19 are two of the new ESS 8-channel ES9039SPRO DAC chips, featuring the fourth generation 32Bit HyperStream architecture and capable of ultra-high dynamic range with ultra-low noise. These DAC chips allow the K19 to output clearer and richer audio with plenty of detail.
8-channel THX AAA 788+ headphone amplifier
The K19 features a new headphone amplifier design consisting of an 8-channel THX AAA 788+ headphone amp architecture working together in parallel and backed by a high-voltage power supply. The THX amp chips are connected in parallel via 2×2 groups to make up a totally balanced,4-channel amplification system. The result is enhanced transients, and high-power output up to 8000mW+8000mW with a 32Ω load – allowing the K19 to drive all kinds of headphones with ease.
Dual ACCUSILICON high-performance ultra-low phase noise femtosecond crystal oscillators
The K19 employs two industry-leading ACCUSILICON AS318-B ultra-low phase noise femtosecond crystal oscillators (45.1584MHz,49.1520MHz), which are 100% pre-screened before being selected for use in the K19. These femtosecond crystal oscillators effectively reduce the impact of phase noise on audio signals and allow for accurate audio restoration and different sampling rates – resulting in purer and more stable sound no matter the source sampling rate.
New flagship, ultra-thin diecast unibody shock-proof construction
The K19 comes with a brand-new styling, made of a diecast unibody aluminium alloy body for a totally seamless design. The aluminium alloy body is carefully polished by a multi-axis CNC machine to a quality befitting of a flagship. This aluminium alloy body not only features reduced thickness but is also capably shock-proof. And when paired with the included stand, the K19 is simply stable!
A new HiFi direction, supports HDMI/ARC decoding
HDMI IN and ARC capabilities are present in an FIIO desktop DAC and amp for the first time. The K19 supports decoding from HDMI input, HDMI output and HDMI ARC audio return channel functionality, opening the doors to a new way of experiencing an immersive audiovisual experience.
HDMI decoding/output supports up to 192kHz/24bit sampling rate HDMI ARC: supports 44.1/48kHz sampling rates.
Separated and shielded circuit boards
The digital and analogue audio circuits of the K19 lie on separate boards for full isolation and greatly reduced interference. There are metal shields for the DSP board, DAC board, and the THX head-phone amplifier board, as a result of the digital board and module board adopting a compartmentalized aluminium alloy isolation design. These measures all help to minimize crosstalk to ensure signal purity. In addition, the honeycomb-mesh aluminium alloy body can also help to further reduce external interference, allowing you to enjoy pure, clean music.
Dual internal and external heat dissipation, high energy coolly output
The K19’s internal heat dissipation system consists of thermally conductive material being in contact with the chips inside, which transfers the heat from the chips to the thermally conductive material and finally to the aluminium alloy outer frame. In addition, the thermally conductive aluminium alloy body features a honeycomb mesh design, which allows for convection heat dissipation. The internal and external heat dissipation systems of the K19 allow the machine to consistently output high power without the user worrying about heat issues.
Four analogue output + two digital output modes
PO+PRE-OUT (default position): front headphone out+rear audio out (volume adjustable)
PO: audio output only from the front headphone jack (volume adjustable)
PRE-OUT: audio output only from the rear connectors (volume adjustable)
LO: audio output only from the rear connectors (fixed level output)
COAXIAL: standard RCA connectors, digital output
OPTICAL: standard toslink connectors, digital output
