FiiO K5 PRO Desktop & DAC - ESS DAC EDITION FIIOK5PRO-BGRADE-28429 (Box opened)

FiiO’s K5 Pro acts as a bridge, allowing your computer, speakers, and headphones to work together to truly experience eerily realistic details. The classic lives on with a stronger decoding In the K5 Pro clock management is improved, and overall decoding performance is excellent. This is due to the XMOS XUF208 decoding chip with an all-new clock matching management system, with unprecedented capabilities that supports decoding up to a sample rate of 768kHz and hardware native DSD decoding. Coaxial and digital input No matter what audio equipment you use, digital audio inherently has advantages in integrity and fidelity of signals transmitted. The K5 Pro allows you to take advantage of digital audio with optical and coaxial inputs supporting up to 192kHz inputs, convenient for connecting various music players and digital interfaces. Next generation DAC The K5 Pro archives new heights in sound quality thanks to the high-performance ESS ES9038Q2M DAC. With the left and right audio channels being independently handled and fully differential audio output, the K5Pro has such a high level of resolution you will be hearing details you never noticed before. Specially designed audio architecture When it comes to amplification, the K5 Pro is no slouch. The K5 Pro has generous space to fit and package the necessary components for exceptional analogue amplification and packs a four-level audio circuit capable of providing extraordinary audio fidelity in its class: second-order LPF + analogue volume adjustment + voltage amplification + current drive. Each part of the amplification circuit works perfectly together in harmony for excellent dynamic range and higher resolution of sound. Utterly precise volume control The NJRC NW1195A analogue volume adjustment chip features an ultra-low output noise of -118dB and is able to adjust the volume by 0.5dB per step. And when this is paired with the combination of the flagship TI TPA6120 op-amp and the OPA1642 JFET op-amp, the K5 Pro provides wonderfully smooth, yet high-resolution sound. Safe, secure and robust external power supply The K5 Pro uses a DC 15 power supply designed to specifically minimize noise. The incoming DC power is filtered with a secondary power supply, which then independently supplies power to the amplification part of the audio circuit and the rest of the circuit. This effectively suppresses power supply ripple and minimizes power supply crosstalk between the two major sections of the circuit, for a more stable and less noisy power that is critical for outstanding sound for such a precisely designed high-performance audio architecture. Musical perfection with ADC volume adjustment Through a reconstruction of the ADC curve, the K5 Pro’s volume control allows you to smoothly adjust volume at extremely fine increments without any undesirable noise nor with any channel imbalances. With the K5 Pro, you can comfortably use various headphones with all kinds of sensitivities. Gain control with